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id="Papers"><h3 class="profile--tab_heading_container">Papers by Nishant Rai</h3></div><div class="js-work-strip profile--work_container" data-work-id="80270477"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/80270477/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting"><img alt="Research paper thumbnail of Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting" class="work-thumbnail" src="https://attachments.academia-assets.com/86708050/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/80270477/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting">Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial pro...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial proportion of population and economic activities world-wide. These structures may be retrofitted against vibratory forces by restricting their displacement response through energy dissipation with tuned sloshing water damper (TSWD). The parameters of TSWD are dependent on structural displacement and its performance is sensitive to its tuning with ES. For well-defined structures and excitations the single frequency TSWD (STSWD) retrofitting system is a very efficient device. For approximately assessed structures subjected to broad band excitations the STSWD system may be replaced by multiple frequency TSWD (MTSWD) system and more robust performance is achieved. The concept has been explained with example of retrofitting proposal of an existing four story building (ES). The TSWD parameters and retrofitting system has been designed theoretically and subsequently verified through shake table si...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="d94d5db657dbc70d24c9064c4171bb6d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":86708050,"asset_id":80270477,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/86708050/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="80270477"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="80270477"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 80270477; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "d94d5db657dbc70d24c9064c4171bb6d" } } $('.js-work-strip[data-work-id=80270477]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":80270477,"title":"Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting","internal_url":"https://www.academia.edu/80270477/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting","owner_id":8942652,"coauthors_can_edit":true,"owner":{"id":8942652,"first_name":"Nishant","middle_initials":null,"last_name":"Rai","page_name":"NishantRai","domain_name":"barc-in","created_at":"2014-02-07T12:23:32.052-08:00","display_name":"Nishant Rai","url":"https://barc-in.academia.edu/NishantRai"},"attachments":[{"id":86708050,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/86708050/thumbnails/1.jpg","file_name":"ijesdmv4n2_10.pdf","download_url":"https://www.academia.edu/attachments/86708050/download_file","bulk_download_file_name":"Tuned_Liquid_Sloshing_Water_Damper_A_Rob.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/86708050/ijesdmv4n2_10-libre.pdf?1653914283=\u0026response-content-disposition=attachment%3B+filename%3DTuned_Liquid_Sloshing_Water_Damper_A_Rob.pdf\u0026Expires=1740536761\u0026Signature=HbEtJASwyQvhGXqi9ygJ~n3Sv5P~wEMfJ0l06-U4IzGp0j8xD7beMLWf-cGwVbcjxC0AajDFFz572yhfbPX8IZNfCaCTPupdOoAo~a90-tyUOQlut4-tJ7UjARY8g6bsPVahh06KQh5qBLfwpewYCcjUY46-erhhsy2W60UxnNvKhWdVR7FyQA3VcWCpIi8s-KJ3R32Uuv~jCBsE8h3s~x52yingYC1C3OFcIMPIP3GCxaFhEXllvm4SbtiCJOZsrkPTk4jAXpgKaUEI1t1n~~ZFqHYDhiddcv0xr1OWejcvEJ-k6x~Z~6koPqixg0OYlNdD9nTX-tcZU26HnMHRxw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"},{"id":86708051,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/86708051/thumbnails/1.jpg","file_name":"ijesdmv4n2_10.pdf","download_url":"https://www.academia.edu/attachments/86708051/download_file","bulk_download_file_name":"Tuned_Liquid_Sloshing_Water_Damper_A_Rob.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/86708051/ijesdmv4n2_10-libre.pdf?1653914284=\u0026response-content-disposition=attachment%3B+filename%3DTuned_Liquid_Sloshing_Water_Damper_A_Rob.pdf\u0026Expires=1740536761\u0026Signature=NCo79EwMH2LITXsqXw5FANsV4KFsocB5KaTYX5GJ83I7RORAqS7DgvrCfcREq~4ws7wnT76JgXd87OamFw2aMv0HEEWbVxZ8Rn6c1qsFdQ2kKAb0JL4PbUe7dOvOpr4D00epFD-pehEUOtt8WQM3rYUKLpsyU8oYuN26RLEKGKT9G~gO8ViUjw4VssJpWig2-7ESuqJ1ZgoNX6MK4hsHOUVXtyUh2-jp0KqaqtBJ4xXoiQhFU4bW-ahnIDqkGHJju9hYUtyuTrtJECK3kG-09cHnjLdTeBeP1ruFyLTJIb4mzxONyhXnZEsrhUbLNeDe071pqfxVs56dtZZc8kI92Q__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="80270287"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/80270287/Seismic_Retrofitting_of_Existing_Structures_by_Tuned_Sloshing_Water_Damper_An_Experimental_Study"><img alt="Research paper thumbnail of Seismic Retrofitting of Existing Structures by Tuned Sloshing Water Damper: An Experimental Study" class="work-thumbnail" src="https://attachments.academia-assets.com/86707920/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/80270287/Seismic_Retrofitting_of_Existing_Structures_by_Tuned_Sloshing_Water_Damper_An_Experimental_Study">Seismic Retrofitting of Existing Structures by Tuned Sloshing Water Damper: An Experimental Study</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The existing medium-height structures (ES) may be retrofitted with tuned sloshing water damper (T...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The existing medium-height structures (ES) may be retrofitted with tuned sloshing water damper (TSWD) for mitigating increased seismic demands. The performance of TSWD as a response reducing device against vibratory loads is investigated through shake table tests, in coupling with the scaled models (SMs) of ES. The optimum coupling parameters of TSWD with respect to the SMs are obtained through free-vibration tests. Subsequently, the optimally tuned SM-TSWD coupling is subjected to forced sinusoidal vibrations at the resonant frequency. The effectiveness of the proposed retrofitting regime is also tested against ground-motion time histories. The experimental data so obtained is analytically extrapolated for applications to the real-life ES. A response reduction of the order of 25% is predicted for the ES with 1.5% mass ratio. A seismic retrofitting design methodology of ‘hardware interactive soft path’ for an assured displacement response reduction is devised.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="552cf3cad6ee504b7ca034032d84f023" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":86707920,"asset_id":80270287,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/86707920/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="80270287"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="80270287"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 80270287; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="75031631"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/75031631/Seismic_Response_Control_Systems_for_Structures"><img alt="Research paper thumbnail of Seismic Response Control Systems for Structures" class="work-thumbnail" src="https://attachments.academia-assets.com/82966196/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/75031631/Seismic_Response_Control_Systems_for_Structures">Seismic Response Control Systems for Structures</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Structures constructed in developing world are typically RC frames with masonry infill. These str...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Structures constructed in developing world are typically RC frames with masonry infill. These structures have little resistance for lateral loads caused by earthquake and wind. Even for adequately designed structures also, due to permissible deformation beyond elastic limits, failure of masonry causes severe loss of life and property. In the case of structures designed to sustain excessive deformation such as of defence establishments, functioning and serviceability of machines and equipment installed therein are adversely affected. This co-lateral damage may be reduced by adopting another design philosophy of structure response control. In this methodology, a supplementary damping device is incorporated in the primary structure, which absorbs most of the seismic energy imparted to it, restricting the structural response within serviceable limits. These devices may be passive, active, semi-active or hybrid types. Other than passive all options are technology-intensive and dependent...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4c440d88d4872a00a6fb78bfc3836923" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":82966196,"asset_id":75031631,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/82966196/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="75031631"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="75031631"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 75031631; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="32549036"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/32549036/RE_QUALIFICATION_OF_NON_SEISMICALLY_DESIGNED_EXISTING_STRUCTURES_THROUGH_TUNED_SLOSHING_WATER_DAMPERS_AN_EXPERIMENTAL_STUDY"><img alt="Research paper thumbnail of RE-QUALIFICATION OF NON-SEISMICALLY DESIGNED EXISTING STRUCTURES THROUGH TUNED SLOSHING WATER DAMPERS: AN EXPERIMENTAL STUDY" class="work-thumbnail" src="https://attachments.academia-assets.com/52729641/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/32549036/RE_QUALIFICATION_OF_NON_SEISMICALLY_DESIGNED_EXISTING_STRUCTURES_THROUGH_TUNED_SLOSHING_WATER_DAMPERS_AN_EXPERIMENTAL_STUDY">RE-QUALIFICATION OF NON-SEISMICALLY DESIGNED EXISTING STRUCTURES THROUGH TUNED SLOSHING WATER DAMPERS: AN EXPERIMENTAL STUDY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Existing medium height RC frame structures with masonry infill panels can be made earthquake safe...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Existing medium height RC frame structures with masonry infill panels can be made earthquake safe by limiting the story drift to 0.2% and thereby ensuring compressive strut action of masonry panels in load resisting mechanism. The tuned sloshing water damper (TSWD) is an effective system for reducing displacement response of structures. The TSWD based systems are sensitive to characteristics of host structures and excitations imposed. The single frequency TSWD systems can be optimally designed and executed for targeted response control of accurately assessed structures against well-defined excitations. The multiple frequency TSWD is a robust system for response control of approximately assessed structures against dynamic excitations. A simulated shake table experimental study has been conducted on a reduced scale model of an existing structure. A retrofitting regime for 25% displacement response reduction of the existing structure has been proposed with multiple frequency TSWD system mounted on its roof. The reduced response shall limit the story drift and ensure the compressive strut action of masonry panels. KEYWORDS: Story drift, effective damping ratio, mass ratio, effectiveness ratio and specific mass ratio.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="97ad9e8c2edff98716a43fa8f19f2274" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":52729641,"asset_id":32549036,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/52729641/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="32549036"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="32549036"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 32549036; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8756645"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8756645/DESIGN_AND_CONSTRUCTION_OF_SHIELDED_RADIOISOTOPE_FACILITY"><img alt="Research paper thumbnail of DESIGN AND CONSTRUCTION OF SHIELDED RADIOISOTOPE FACILITY" class="work-thumbnail" src="https://attachments.academia-assets.com/35111303/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8756645/DESIGN_AND_CONSTRUCTION_OF_SHIELDED_RADIOISOTOPE_FACILITY">DESIGN AND CONSTRUCTION OF SHIELDED RADIOISOTOPE FACILITY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Radioisotope technology is applicable in medicine, agriculture, hydrology and various industries....</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Radioisotope technology is applicable in medicine, agriculture, hydrology and various industries. Its versatility is increasing with advent of knowledge, research and development. The radioisotope technology may be termed as of zero carbon emission. The green quotient of the technology further improves as it consumes some of the by- products of nuclear power technology. Application of radioisotope technology in all aspects of life requires even spread of radioisotope facilities. The equipments being used for various application of this technology require very precise and controlled application. The scientific, technical and engineering domain of this technology is still evolving.<br /> Constructions of such facilities are different from conventional buildings due to its environmental, health, commercial and strategic importance. Such constructions involve micrometer level accuracy and almost zero tolerances. These issues are to be addressed in totality covering planning, material selection, construction methodology with a focus on final utility. <br />Leak tight, corrosion free with minimal contamination probability construction of radio active zones is an area of concern, for which special lining methodology and site specific quality assurance measures have to be developed and adopted. Construction of hot cell and radio-activity related areas are a key activity in such facilities. The main construction material, in normal structures, is reinforced concrete and the same has to be utilised for making technology affordable. The needs for accurately positioning many special embedded parts and through pipes at various locations, with adequate radiation shielding provisions are challenges to be addressed.      <br />The construction methodologies, techniques, special formwork systems etc. need special attention. The site specific measures and innovations to cope up the challenges encountered such as heat of hydration during concreting, and void-less dense concrete around fixtures also merit attention. The strict quality control measures adopted for a fail safe construction output and after construction serviceability of utility is of vital importance. <br />This paper briefly describes a recently constructed project in the light of prevailing guidelines for such structures. Planning, safety, quality and construction methodologies and innovations used at site with reference to better adoptability of the project has also been highlighted.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3bf118fb73bf189fe15f3e85e9c99896" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":35111303,"asset_id":8756645,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/35111303/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8756645"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8756645"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8756645; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "3bf118fb73bf189fe15f3e85e9c99896" } } $('.js-work-strip[data-work-id=8756645]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":8756645,"title":"DESIGN AND CONSTRUCTION OF SHIELDED RADIOISOTOPE FACILITY","internal_url":"https://www.academia.edu/8756645/DESIGN_AND_CONSTRUCTION_OF_SHIELDED_RADIOISOTOPE_FACILITY","owner_id":8942652,"coauthors_can_edit":true,"owner":{"id":8942652,"first_name":"Nishant","middle_initials":null,"last_name":"Rai","page_name":"NishantRai","domain_name":"barc-in","created_at":"2014-02-07T12:23:32.052-08:00","display_name":"Nishant Rai","url":"https://barc-in.academia.edu/NishantRai"},"attachments":[{"id":35111303,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/35111303/thumbnails/1.jpg","file_name":"Paper-Const.pdf","download_url":"https://www.academia.edu/attachments/35111303/download_file","bulk_download_file_name":"DESIGN_AND_CONSTRUCTION_OF_SHIELDED_RADI.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/35111303/Paper-Const-libre.pdf?1413231593=\u0026response-content-disposition=attachment%3B+filename%3DDESIGN_AND_CONSTRUCTION_OF_SHIELDED_RADI.pdf\u0026Expires=1740536761\u0026Signature=g2RcKd1gL0fMiiXPRh7Es0Ut8wFGQuVJHqyi3OLCnEnkCDhhGp7T1OTEa14ZHOe-A1QZMpAQnriaRAV9MYkV2nNV2Mvwoy1k9bfMz1Ix~2RXwJPZM9rIR-q4egUiO2afLT-95OzkBGLynmxyiZTmf0Yxc30qNus1azJd2bRKyR6RDhR9aqpVuXSkfPJkz-tWh4YFOPKFCFL8WTSiAnrPtiUpy-KUuDIcszXlRP7PNBwhV4ZhhQB11ejalVi-IHkpCTgEeCdY-mkNJ68MkXMsvIZMoKlu99ti2ghdVjtsZ4aTAz9cSXY73dohRgJ3Z29pbihEtGBdq6kKUzElmzGRzQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536746"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536746/MONSOON_MANAGEMENT_FOR_WATER_SUSTAINABILITY"><img alt="Research paper thumbnail of MONSOON MANAGEMENT FOR WATER SUSTAINABILITY" class="work-thumbnail" src="https://attachments.academia-assets.com/34912620/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536746/MONSOON_MANAGEMENT_FOR_WATER_SUSTAINABILITY">MONSOON MANAGEMENT FOR WATER SUSTAINABILITY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The importance of water has attracted attention of our development planners and various mega-proj...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The importance of water has attracted attention of our development planners and various mega-projects have come in existence. But after considering, environmental cost, non-volunteered rehabilitation of affected people, pricing of water thus procured, sustenance of such large projects is doubtful.<br />Water for domestic consumption is an essential right of society, which must be over-secured. However cost of such water infra-structure can be optimally reduced by combining it with other infrastructure projects.<br />Water for achieving food security, is another major concern. This goal may be achieved through an alternative methodology. It in-volves re-grading of cultivation fields and creating a formation to retain major part of monsoon rainfall in the field itself. This will make availability of captive water to the farmer for longer duration resulting in increased farm utilization and crop yield.<br />This paper tries to substantiate the above mentioned points with the help of statistical data and mathematical calculations for three agro-climatic zones - Madhya Pradesh, Vidarbha, and Gujarat. A solution for Water problem of Delhi has also been suggested.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="ca7ace3124e9b0fd856f5a197a5f1c47" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912620,"asset_id":8536746,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912620/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536746"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536746"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536746; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536398"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536398/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting"><img alt="Research paper thumbnail of Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting" class="work-thumbnail" src="https://attachments.academia-assets.com/34912347/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536398/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting">Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial pro...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial proportion of population and economic activities world-wide. These structures may be retrofitted against vibratory forces by restricting their displacement response through energy dissipation with tuned sloshing water damper (TSWD). The parameters of TSWD are dependent on structural displacement and its performance is sensitive to its tuning with ES. For well-defined structures and excitations the single frequency TSWD (STSWD) retrofitting system is a very efficient device. For approximately assessed structures subjected to broad band excitations the STSWD system may be replaced by multiple frequency TSWD (MTSWD) system and more robust performance is achieved. The concept has been explained with example of retrofitting proposal of an existing four story building (ES). The TSWD parameters and retrofitting system has been designed theoretically and subsequently verified through shake table simulated experiments. An experimental study has been conducted with a reduced scale model (SM) having dynamic similitude with ES mounted with three acrylic boxes exactly similar to that to be used as TSWD. The simulated testing has been conducted on ES in coupling with TSWD for three discrete frequencies representing the first mode frequency of the ES for three different structural conditions. The performances of the STSWD and MTSWD system, with mass ratio equivalence, have been observed and compared against resonant<br />frequency harmonic excitation and earthquake excitation. An execution scheme of MTSWD retrofitting system for ES has also been proposed.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="419430ce005273677337ca82cf46fd54" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912347,"asset_id":8536398,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912347/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536398"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536398"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536398; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536325"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536325/WATER_AS_ENERGY_ABSORBER_TO_CONTROL_THE_SEISMIC_RESPONSE_OF_THE_STRUCTURES"><img alt="Research paper thumbnail of WATER AS ENERGY ABSORBER TO CONTROL THE SEISMIC RESPONSE OF THE STRUCTURES" class="work-thumbnail" src="https://attachments.academia-assets.com/34912138/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536325/WATER_AS_ENERGY_ABSORBER_TO_CONTROL_THE_SEISMIC_RESPONSE_OF_THE_STRUCTURES">WATER AS ENERGY ABSORBER TO CONTROL THE SEISMIC RESPONSE OF THE STRUCTURES</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The existing medium height structures, constructed before 1970, are typically RC frames with maso...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The existing medium height structures, constructed before 1970, are typically RC frames with masonry infill. These structures have been designed for gravity loads only and have little resistance for lateral loads caused by earthquakes. There exist many retrofitting methods for upgrading the seismic performance of such structures. The conventional retrofitting practices are generally invasive in character, to the existing structures and their occupants, hence not very acceptable to the occupancy. The concept of response control with tuned sloshing water dampers (TSWD) is one such promising option for improving the seismic resistance of these structures which is least invasive.<br />The central to the TSWD based retrofitting, of RC frame masonry infilled structures, is to reduce the displacement of the ES and avoidance of masonry failure during earthquake. The concept has been explained by example of an existing four story residential building. The structure has been discretised for three structural contribution conditions of masonry, i.e full contribution, no contribution and intermediate state where some part of masonry is contributing as diagonal compressive struts. The retrofitting propositions for all these three conditions have been made, analytically, with TSWD systems. It has been explained that for well-defined system subjected to harmonic excitations single frequency TSWDs (STSWD) may be optimally devised. For approximately assessed systems subjected to broad band excitations multiple frequency TSWDs (MTSWD) systems more robust.<br />The existing procedure for design of retrofitting system is iterative and cumbersome due to involvement of many approximately assessed parameters. Design charts for effectiveness of retrofitting system have been developed to obtain a quick estimate of mass ratio required for desired response reduction. Two simplified non-iterative methods have been developed one for accurately assessed and another for approximately assessed structures. These methods give a quick estimate of required mass ratio for desired performance. <br />The analytically made retrofitting propositions have been verified experimentally through the shake table tests on scaled model of the ES in coupling with TSWDs. The main feature of the experimental study is that ES has been scaled down dimensionally such that SM≡ES, but dynamic parameters of the structure have not been scaled and SM is equal to ES. The TSWD, tested with SMs in laboratory, is proposed for actual field execution.<br />The process of experimental validations of SM-TSWD interaction has been accomplished through 157 test runs. The interpretation of these experimental observations has led to simplified empirical correlations between relevant dynamic parameters of TSWD and ES. These empirical relations are valid for harmonic excitations only. However for broad band earthquake excitation the analytically devised propositions are only trend indicative and not valid. The robustness of the MTSWD system over STSWD system against earthquake excitations has been substantiated. An adequate factor of safety may be incorporated for applying the inferences from harmonic excitations to broad band excitations for MTSWD based retrofitting system. This study proposes a factor of safety 3.<br />Two non-dimensional parameters, as effectiveness ratio quantifying percentage response reduction and specific mass ratio defined as mass ratio required for one percentage effectiveness of the retrofitting system, for evaluating the performance of TSWD based retrofitting system have been introduced.<br />Since the analytical proposals are not valid for broad band excitations, it is proposed that for real life situations, the TSWD based retrofitting systems, should be designed on the basis of experimental evidence. A Hardware interactive soft path methodology for design of TSWD retrofitting system has been devised. As there is no scaling of dynamic properties between SM and ES and the TSWD used in coupling with SM has to be installed at ES, hence the experimental inferences of SM-TSWD coupling can be extrapolated to retrofitting of the ES, as ES-TSWD coupling. Thus a TSWD based retrofitting system may be designed for desired response reduction of ES. <br />The required sloshing water mass is to be accommodated in multiple TSWDs with their frequencies distributed around the frequency of ES. The system as a whole behaves as a robust multiple TSWD retrofitting regime with assurance of replicating laboratory performance in real life seismic eventuality.<br />From experimental observations for 25% effectiveness of TSWD system against broad band excitation the required mass ratio is 2.59% for SM and same is valid for ES also, accordingly an execution scheme has been proposed. <br />This research presents a simple and non-invasive retrofit scheme utilising tuned sloshing water dampers in RC frame masonry infilled structures. The design approach utilises the theoretical knowledge in conjunction with experimental verifications for TSWD based retrofitting system. The retrofitting with TSWDs may be accomplished by modifying the existing overhead tank and installing additional tanks of optimally tuned geometry for desired response reduction. The installation of TSWD based retrofitting system provides all time preparedness against earthquake, without interfering with the structural, architectural and occupancy requirements. The proposed TSWD based retrofitting system essentially a technique of absorbing seismic energy through sloshing action of water.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="f8aa8a14278cf4dd4619af9575b49553" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912138,"asset_id":8536325,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912138/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536325"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536325"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536325; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536037"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536037/SEISMIC_RETROFITTING_BY_TUNED_SLOSHING_WATER_DAMPER"><img alt="Research paper thumbnail of SEISMIC RETROFITTING BY TUNED SLOSHING WATER DAMPER" class="work-thumbnail" src="https://attachments.academia-assets.com/34912037/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536037/SEISMIC_RETROFITTING_BY_TUNED_SLOSHING_WATER_DAMPER">SEISMIC RETROFITTING BY TUNED SLOSHING WATER DAMPER</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Structural response control, with tuned sloshing water dampers (TSWD) may be adopted as seismic r...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Structural response control, with tuned sloshing water dampers (TSWD) may be adopted as seismic<br />retrofitting measure for the existing structures (ES).The water tanks of designed geometry rigidly attached with the<br />ES at strategic locations behave as TSWD. Response reduction during earthquake is affected by energy dissipated<br />through sloshing of water mass.<br />The energy dissipation is dependent on mutual tuning of ES and TSWD, mass ratio, damping ratio of<br />TSWD and damping ratio of ES. Larger the mass ratio more will be the response reduction. Mutual dependency and<br />uncertainties involved with the assessment of dynamic properties of ES make the design process of retrofitting<br />system iterative and cumbersome.<br />Multiple dampers, with their frequencies distributed around the first mode frequency of ES, shall perform<br />more robustly. The desired mass ratio may be accommodated in multiple tanks. The geometry of these tanks may be<br />moderated in such a way that it behaves as multiple dampers. The multiple TSWD system will overcome the errors<br />due to assessment approximations of dynamic properties of ES and TSWD.<br />The performance of the retrofitting system is assessed by reduction in maximum structural displacement<br />affected. Design charts in the form of effectiveness ratio, depicting the performance of TSWDs, have been presented<br />which reduces iterative computational effort. The retrofitting methodology is explained by example of an existing<br />four story structure. The effectiveness and robust performance of multiple TSWD has been demonstrated. The<br />method ensures all time preparedness of the ES, without occupancy and structural interference, against earthquake.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="c0e996d638d2ead8fd86d7011d42f40a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912037,"asset_id":8536037,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912037/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536037"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536037"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536037; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535989"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535989/Disaster_Resistant_Collapse_Proof_Mass_Housing"><img alt="Research paper thumbnail of Disaster Resistant Collapse Proof Mass Housing" class="work-thumbnail" src="https://attachments.academia-assets.com/34911979/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535989/Disaster_Resistant_Collapse_Proof_Mass_Housing">Disaster Resistant Collapse Proof Mass Housing</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Housing is the most important tool of social security and it should be ensured by durable and str...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Housing is the most important tool of social security and it should be ensured by durable and strong<br />construction practices along with affordability.<br />In Indian reference the housing problem has been compounded by the fact that 59% area of our country is<br />disaster prone, to one or other kind of natural calamity. Of all the natural calamities earth quake does not give<br />any reaction time what so ever for hazard avoidance and mitigation. The suddenness makes earth quake most<br />feared natural disaster.<br />Settlements housing weaker sections of society are more vulnerable to such disasters as their houses are<br />poorly engineered and constructed with locally available material and technology, having very low score on<br />disaster resistance and sustainability count. A general feature of low cost housing concepts is maximum<br />replacement of cement and steel with locally available materials and vernacular technology. Avoidance of steel<br />and concrete increases the construction mass which increases the amount of seismic impact on such structures.<br />In Indian socio-economic context, low cost housing proposals do not get acceptability with common man, due to<br />lack of durability.<br />In the present paper a pre-engineered pre-cast design for rural mass housing, utilising most versatile and<br />durable building materials, concrete and steel as main constituent is proposed. This is less massive but<br />technology and labour intensive. The design and construction methodology adopted, results in light and quick<br />construction.<br />The proposed design incorporates base isolation through horizontal decoupling and seismic energy<br />dissipation through friction, flexibility. A collapse proof failure mode has been devised, which can avoid loss of<br />life and property. This design may be used with great advantage in aftermath of a seismic calamity, when after<br />shocks are still being experienced, by virtue of being light, quick to construct, disaster resistant, and<br />economical. The design is superior on sustainability parameters also.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="415b0bc37147859cc7a69010c46b31d6" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34911979,"asset_id":8535989,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34911979/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8535989"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8535989"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8535989; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535895"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535895/SEISMIC_RETROFITTING_OF_EXISTING_STRUCTURES_BY_TUNED_SLOSHING_WATER_DAMPER_AN_EXPERIMENTAL_STUDY"><img alt="Research paper thumbnail of SEISMIC RETROFITTING OF EXISTING STRUCTURES BY TUNED SLOSHING WATER DAMPER: AN EXPERIMENTAL STUDY" class="work-thumbnail" src="https://attachments.academia-assets.com/34911925/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535895/SEISMIC_RETROFITTING_OF_EXISTING_STRUCTURES_BY_TUNED_SLOSHING_WATER_DAMPER_AN_EXPERIMENTAL_STUDY">SEISMIC RETROFITTING OF EXISTING STRUCTURES BY TUNED SLOSHING WATER DAMPER: AN EXPERIMENTAL STUDY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The existing medium height structures (ES) may be retrofitted with tuned sloshing water dampers (...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The existing medium height structures (ES) may be retrofitted with tuned sloshing water dampers (TSWD), for mitigating increased seismic demands. The performance of the TSWD as response reducing device against vibratory loads has been investigated through shake table tests, in coupling with scaled model(SM) of ES. The optimum coupling parameters of the TSWD with respect to SM have been obtained through free vibration tests. Subsequently the optimally tuned SM-TSWD coupling has been subjected to forced sinusoidal vibration of the resonant frequency. The effectiveness of the retrofitting regime has also been tested against ground motion time histories. The experimental data have been analytically extrapolated for application to the real life existing structure (ES). A response reduction of the order of 25% has been predicted for the ES with 1.5% mass ratio. A seismic retrofitting design methodology of ‘hardware interactive soft path’ for assured displacement response reduction has been devised.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="9a7962f21f54af62df775a1203d0e5ca" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34911925,"asset_id":8535895,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34911925/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8535895"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8535895"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8535895; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535851"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535851/EFFECTIVENESS_OF_MULTIPLE_TSWD_FOR_SEISMIC_RESPONSE_CONTROL_OF_MASONRY_INFILLED_RC_FRAMED_STRUCTURE"><img alt="Research paper thumbnail of EFFECTIVENESS OF MULTIPLE TSWD FOR SEISMIC RESPONSE CONTROL OF MASONRY INFILLED RC FRAMED STRUCTURE" class="work-thumbnail" src="https://attachments.academia-assets.com/34911888/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535851/EFFECTIVENESS_OF_MULTIPLE_TSWD_FOR_SEISMIC_RESPONSE_CONTROL_OF_MASONRY_INFILLED_RC_FRAMED_STRUCTURE">EFFECTIVENESS OF MULTIPLE TSWD FOR SEISMIC RESPONSE CONTROL OF MASONRY INFILLED RC FRAMED STRUCTURE</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Existing masonry infilled RC framed structures (ES) can be retrofitted for improved performance u...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Existing masonry infilled RC framed structures (ES) can be retrofitted for improved performance<br />under earthquake loading by structural response control methodology, with tuned sloshing water<br />damper (TSWD). The retrofitting may be accomplished by modifying the existing over head tank<br />and installing additional tanks of tuned geometry for required response reduction.<br />The required water mass is provided in multiple TSWDs with their frequencies distributed<br />around the frequency of ES. The system as a whole behaves as multiple TSWD retrofitting regime<br />with robustness and reliability. This system takes care of the assessment approximations in dynamic<br />properties of the ES.<br />The retrofitting method aims for reduced displacement during earthquake. The efficiency of the<br />retrofitting system may be quantified by effectiveness ratio. Design charts have been developed<br />which reduces iterative computational efforts.<br />The simplicity of design and execution of the proposed retrofitting regime is explained by<br />example of an existing four story structure.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="52f5a6943dd3d40eab4bb10d0907a60b" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34911888,"asset_id":8535851,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34911888/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8535851"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8535851"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8535851; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535791"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535791/Seismic_Response_Control_Systems_for_Structures"><img alt="Research paper thumbnail of Seismic Response Control Systems for Structures" class="work-thumbnail" src="https://attachments.academia-assets.com/34911830/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535791/Seismic_Response_Control_Systems_for_Structures">Seismic Response Control Systems for Structures</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Structures constructed in developing world are typically RC frames with masonry infill. These str...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Structures constructed in developing world are typically RC frames with masonry infill. These structures<br />have little resistance for lateral loads caused by earthquake and wind. Even for adequately designed structures<br />also, due to permissible deformation beyond elastic limits, failure of masonry causes severe loss of life and<br />property. In the case of structures designed to sustain excessive deformation such as of defence establishments,<br />functioning and serviceability of machines and equipment installed therein are adversely affected. This co-lateral<br />damage may be reduced by adopting another design philosophy of structure response control. In this methodology,<br />a supplementary damping device is incorporated in the primary structure, which absorbs most of the seismic<br />energy imparted to it, restricting the structural response within serviceable limits. These devices may be passive,<br />active, semi-active or hybrid types. Other than passive all options are technology-intensive and dependent on<br />external energy source, not a favourable proposition for developing nations. Among all the passive devices, tuned<br />liquid dampers (TLDs) promise to be most suitable. Here, existing overhead water tanks (OHWT) may be used<br />as TLD with slight adjustment and modification. This method will be able to control the structural response<br />without putting any extra load on the existing or newly-designed buildings. This paper reviews various types of<br />dampers and discusses evolution of tuned liquid dampers. A method has also been proposed for incorporating<br />TLDs in existing and new structures. This methodology may be very useful for structures of defence establishment<br />which are scattered and remotely placed by location, housing important equipments sensitive to vibrations, as it<br />is free from external power dependence and regular maintenance.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="451f168e675b239adf76935cb4ebbfe1" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34911830,"asset_id":8535791,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34911830/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8535791"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8535791"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8535791; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> </div><div class="profile--tab_content_container js-tab-pane tab-pane" data-section-id="1890609" id="papers"><div class="js-work-strip profile--work_container" data-work-id="80270477"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/80270477/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting"><img alt="Research paper thumbnail of Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting" class="work-thumbnail" src="https://attachments.academia-assets.com/86708050/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/80270477/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting">Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial pro...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial proportion of population and economic activities world-wide. These structures may be retrofitted against vibratory forces by restricting their displacement response through energy dissipation with tuned sloshing water damper (TSWD). The parameters of TSWD are dependent on structural displacement and its performance is sensitive to its tuning with ES. For well-defined structures and excitations the single frequency TSWD (STSWD) retrofitting system is a very efficient device. For approximately assessed structures subjected to broad band excitations the STSWD system may be replaced by multiple frequency TSWD (MTSWD) system and more robust performance is achieved. The concept has been explained with example of retrofitting proposal of an existing four story building (ES). The TSWD parameters and retrofitting system has been designed theoretically and subsequently verified through shake table si...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="d94d5db657dbc70d24c9064c4171bb6d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":86708050,"asset_id":80270477,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/86708050/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="80270477"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="80270477"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 80270477; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="80270287"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/80270287/Seismic_Retrofitting_of_Existing_Structures_by_Tuned_Sloshing_Water_Damper_An_Experimental_Study"><img alt="Research paper thumbnail of Seismic Retrofitting of Existing Structures by Tuned Sloshing Water Damper: An Experimental Study" class="work-thumbnail" src="https://attachments.academia-assets.com/86707920/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/80270287/Seismic_Retrofitting_of_Existing_Structures_by_Tuned_Sloshing_Water_Damper_An_Experimental_Study">Seismic Retrofitting of Existing Structures by Tuned Sloshing Water Damper: An Experimental Study</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The existing medium-height structures (ES) may be retrofitted with tuned sloshing water damper (T...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The existing medium-height structures (ES) may be retrofitted with tuned sloshing water damper (TSWD) for mitigating increased seismic demands. The performance of TSWD as a response reducing device against vibratory loads is investigated through shake table tests, in coupling with the scaled models (SMs) of ES. The optimum coupling parameters of TSWD with respect to the SMs are obtained through free-vibration tests. Subsequently, the optimally tuned SM-TSWD coupling is subjected to forced sinusoidal vibrations at the resonant frequency. The effectiveness of the proposed retrofitting regime is also tested against ground-motion time histories. The experimental data so obtained is analytically extrapolated for applications to the real-life ES. A response reduction of the order of 25% is predicted for the ES with 1.5% mass ratio. A seismic retrofitting design methodology of ‘hardware interactive soft path’ for an assured displacement response reduction is devised.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="552cf3cad6ee504b7ca034032d84f023" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":86707920,"asset_id":80270287,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/86707920/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="80270287"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="80270287"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 80270287; 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These str...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Structures constructed in developing world are typically RC frames with masonry infill. These structures have little resistance for lateral loads caused by earthquake and wind. Even for adequately designed structures also, due to permissible deformation beyond elastic limits, failure of masonry causes severe loss of life and property. In the case of structures designed to sustain excessive deformation such as of defence establishments, functioning and serviceability of machines and equipment installed therein are adversely affected. This co-lateral damage may be reduced by adopting another design philosophy of structure response control. In this methodology, a supplementary damping device is incorporated in the primary structure, which absorbs most of the seismic energy imparted to it, restricting the structural response within serviceable limits. These devices may be passive, active, semi-active or hybrid types. Other than passive all options are technology-intensive and dependent...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4c440d88d4872a00a6fb78bfc3836923" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":82966196,"asset_id":75031631,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/82966196/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="75031631"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="75031631"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 75031631; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="32549036"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/32549036/RE_QUALIFICATION_OF_NON_SEISMICALLY_DESIGNED_EXISTING_STRUCTURES_THROUGH_TUNED_SLOSHING_WATER_DAMPERS_AN_EXPERIMENTAL_STUDY"><img alt="Research paper thumbnail of RE-QUALIFICATION OF NON-SEISMICALLY DESIGNED EXISTING STRUCTURES THROUGH TUNED SLOSHING WATER DAMPERS: AN EXPERIMENTAL STUDY" class="work-thumbnail" src="https://attachments.academia-assets.com/52729641/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/32549036/RE_QUALIFICATION_OF_NON_SEISMICALLY_DESIGNED_EXISTING_STRUCTURES_THROUGH_TUNED_SLOSHING_WATER_DAMPERS_AN_EXPERIMENTAL_STUDY">RE-QUALIFICATION OF NON-SEISMICALLY DESIGNED EXISTING STRUCTURES THROUGH TUNED SLOSHING WATER DAMPERS: AN EXPERIMENTAL STUDY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Existing medium height RC frame structures with masonry infill panels can be made earthquake safe...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Existing medium height RC frame structures with masonry infill panels can be made earthquake safe by limiting the story drift to 0.2% and thereby ensuring compressive strut action of masonry panels in load resisting mechanism. The tuned sloshing water damper (TSWD) is an effective system for reducing displacement response of structures. The TSWD based systems are sensitive to characteristics of host structures and excitations imposed. The single frequency TSWD systems can be optimally designed and executed for targeted response control of accurately assessed structures against well-defined excitations. The multiple frequency TSWD is a robust system for response control of approximately assessed structures against dynamic excitations. A simulated shake table experimental study has been conducted on a reduced scale model of an existing structure. A retrofitting regime for 25% displacement response reduction of the existing structure has been proposed with multiple frequency TSWD system mounted on its roof. The reduced response shall limit the story drift and ensure the compressive strut action of masonry panels. KEYWORDS: Story drift, effective damping ratio, mass ratio, effectiveness ratio and specific mass ratio.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="97ad9e8c2edff98716a43fa8f19f2274" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":52729641,"asset_id":32549036,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/52729641/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="32549036"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="32549036"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 32549036; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8756645"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8756645/DESIGN_AND_CONSTRUCTION_OF_SHIELDED_RADIOISOTOPE_FACILITY"><img alt="Research paper thumbnail of DESIGN AND CONSTRUCTION OF SHIELDED RADIOISOTOPE FACILITY" class="work-thumbnail" src="https://attachments.academia-assets.com/35111303/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8756645/DESIGN_AND_CONSTRUCTION_OF_SHIELDED_RADIOISOTOPE_FACILITY">DESIGN AND CONSTRUCTION OF SHIELDED RADIOISOTOPE FACILITY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Radioisotope technology is applicable in medicine, agriculture, hydrology and various industries....</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Radioisotope technology is applicable in medicine, agriculture, hydrology and various industries. Its versatility is increasing with advent of knowledge, research and development. The radioisotope technology may be termed as of zero carbon emission. The green quotient of the technology further improves as it consumes some of the by- products of nuclear power technology. Application of radioisotope technology in all aspects of life requires even spread of radioisotope facilities. The equipments being used for various application of this technology require very precise and controlled application. The scientific, technical and engineering domain of this technology is still evolving.<br /> Constructions of such facilities are different from conventional buildings due to its environmental, health, commercial and strategic importance. Such constructions involve micrometer level accuracy and almost zero tolerances. These issues are to be addressed in totality covering planning, material selection, construction methodology with a focus on final utility. <br />Leak tight, corrosion free with minimal contamination probability construction of radio active zones is an area of concern, for which special lining methodology and site specific quality assurance measures have to be developed and adopted. Construction of hot cell and radio-activity related areas are a key activity in such facilities. The main construction material, in normal structures, is reinforced concrete and the same has to be utilised for making technology affordable. The needs for accurately positioning many special embedded parts and through pipes at various locations, with adequate radiation shielding provisions are challenges to be addressed.      <br />The construction methodologies, techniques, special formwork systems etc. need special attention. The site specific measures and innovations to cope up the challenges encountered such as heat of hydration during concreting, and void-less dense concrete around fixtures also merit attention. The strict quality control measures adopted for a fail safe construction output and after construction serviceability of utility is of vital importance. <br />This paper briefly describes a recently constructed project in the light of prevailing guidelines for such structures. Planning, safety, quality and construction methodologies and innovations used at site with reference to better adoptability of the project has also been highlighted.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3bf118fb73bf189fe15f3e85e9c99896" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":35111303,"asset_id":8756645,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/35111303/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8756645"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8756645"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8756645; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=8756645]").text(description); $(".js-view-count[data-work-id=8756645]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 8756645; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='8756645']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536746"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536746/MONSOON_MANAGEMENT_FOR_WATER_SUSTAINABILITY"><img alt="Research paper thumbnail of MONSOON MANAGEMENT FOR WATER SUSTAINABILITY" class="work-thumbnail" src="https://attachments.academia-assets.com/34912620/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536746/MONSOON_MANAGEMENT_FOR_WATER_SUSTAINABILITY">MONSOON MANAGEMENT FOR WATER SUSTAINABILITY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The importance of water has attracted attention of our development planners and various mega-proj...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The importance of water has attracted attention of our development planners and various mega-projects have come in existence. But after considering, environmental cost, non-volunteered rehabilitation of affected people, pricing of water thus procured, sustenance of such large projects is doubtful.<br />Water for domestic consumption is an essential right of society, which must be over-secured. However cost of such water infra-structure can be optimally reduced by combining it with other infrastructure projects.<br />Water for achieving food security, is another major concern. This goal may be achieved through an alternative methodology. It in-volves re-grading of cultivation fields and creating a formation to retain major part of monsoon rainfall in the field itself. This will make availability of captive water to the farmer for longer duration resulting in increased farm utilization and crop yield.<br />This paper tries to substantiate the above mentioned points with the help of statistical data and mathematical calculations for three agro-climatic zones - Madhya Pradesh, Vidarbha, and Gujarat. A solution for Water problem of Delhi has also been suggested.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="ca7ace3124e9b0fd856f5a197a5f1c47" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912620,"asset_id":8536746,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912620/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536746"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536746"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536746; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "ca7ace3124e9b0fd856f5a197a5f1c47" } } $('.js-work-strip[data-work-id=8536746]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":8536746,"title":"MONSOON MANAGEMENT FOR WATER SUSTAINABILITY","internal_url":"https://www.academia.edu/8536746/MONSOON_MANAGEMENT_FOR_WATER_SUSTAINABILITY","owner_id":8942652,"coauthors_can_edit":true,"owner":{"id":8942652,"first_name":"Nishant","middle_initials":null,"last_name":"Rai","page_name":"NishantRai","domain_name":"barc-in","created_at":"2014-02-07T12:23:32.052-08:00","display_name":"Nishant Rai","url":"https://barc-in.academia.edu/NishantRai"},"attachments":[{"id":34912620,"title":"","file_type":"doc","scribd_thumbnail_url":"https://attachments.academia-assets.com/34912620/thumbnails/1.jpg","file_name":"monsoon_management.doc","download_url":"https://www.academia.edu/attachments/34912620/download_file","bulk_download_file_name":"MONSOON_MANAGEMENT_FOR_WATER_SUSTAINABIL.doc","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/34912620/monsoon_management.doc?1738123615=\u0026response-content-disposition=attachment%3B+filename%3DMONSOON_MANAGEMENT_FOR_WATER_SUSTAINABIL.doc\u0026Expires=1740536761\u0026Signature=Ramjogv5RHVGFWVYxYf3oBUNOFxekF69Tu0XVA8MdLlQfp~II8Y6~bKgxsJxkDErSi7kWWjaTS7Tv6~bwXqlJKGK2MgQJj-ElgCpX1nV1sYbmCOSRSqSxoxOxf9dz9kQf9iUhS1ijYUEsXzWgORjsSggFkovWwVVO7JxXUFd6fvW3VQxcMBR5n4~dGPZqFpQ5tjaNYkqdZWiE1pENf~FYSNnY1bnBMsnphM~ZOdn2kTHGJBdtpzqwjuLAZdGaHYGBj5efPQn99HCeXzfzNmck5lyQc8bmX6gbDiZMr4M8hV1sXKX9rGFhoQZpMhAPy3zN4U-LtfL~SFReQQ1l9uzbA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536398"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536398/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting"><img alt="Research paper thumbnail of Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting" class="work-thumbnail" src="https://attachments.academia-assets.com/34912347/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536398/Tuned_Liquid_Sloshing_Water_Damper_A_Robust_Device_for_Seismic_Retrofitting">Tuned Liquid Sloshing Water Damper: A Robust Device for Seismic Retrofitting</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial pro...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The medium height, RC framed, masonry infilled, existing structures (ES) houses a substantial proportion of population and economic activities world-wide. These structures may be retrofitted against vibratory forces by restricting their displacement response through energy dissipation with tuned sloshing water damper (TSWD). The parameters of TSWD are dependent on structural displacement and its performance is sensitive to its tuning with ES. For well-defined structures and excitations the single frequency TSWD (STSWD) retrofitting system is a very efficient device. For approximately assessed structures subjected to broad band excitations the STSWD system may be replaced by multiple frequency TSWD (MTSWD) system and more robust performance is achieved. The concept has been explained with example of retrofitting proposal of an existing four story building (ES). The TSWD parameters and retrofitting system has been designed theoretically and subsequently verified through shake table simulated experiments. An experimental study has been conducted with a reduced scale model (SM) having dynamic similitude with ES mounted with three acrylic boxes exactly similar to that to be used as TSWD. The simulated testing has been conducted on ES in coupling with TSWD for three discrete frequencies representing the first mode frequency of the ES for three different structural conditions. The performances of the STSWD and MTSWD system, with mass ratio equivalence, have been observed and compared against resonant<br />frequency harmonic excitation and earthquake excitation. An execution scheme of MTSWD retrofitting system for ES has also been proposed.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="419430ce005273677337ca82cf46fd54" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912347,"asset_id":8536398,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912347/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536398"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536398"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536398; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536325"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536325/WATER_AS_ENERGY_ABSORBER_TO_CONTROL_THE_SEISMIC_RESPONSE_OF_THE_STRUCTURES"><img alt="Research paper thumbnail of WATER AS ENERGY ABSORBER TO CONTROL THE SEISMIC RESPONSE OF THE STRUCTURES" class="work-thumbnail" src="https://attachments.academia-assets.com/34912138/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536325/WATER_AS_ENERGY_ABSORBER_TO_CONTROL_THE_SEISMIC_RESPONSE_OF_THE_STRUCTURES">WATER AS ENERGY ABSORBER TO CONTROL THE SEISMIC RESPONSE OF THE STRUCTURES</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The existing medium height structures, constructed before 1970, are typically RC frames with maso...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The existing medium height structures, constructed before 1970, are typically RC frames with masonry infill. These structures have been designed for gravity loads only and have little resistance for lateral loads caused by earthquakes. There exist many retrofitting methods for upgrading the seismic performance of such structures. The conventional retrofitting practices are generally invasive in character, to the existing structures and their occupants, hence not very acceptable to the occupancy. The concept of response control with tuned sloshing water dampers (TSWD) is one such promising option for improving the seismic resistance of these structures which is least invasive.<br />The central to the TSWD based retrofitting, of RC frame masonry infilled structures, is to reduce the displacement of the ES and avoidance of masonry failure during earthquake. The concept has been explained by example of an existing four story residential building. The structure has been discretised for three structural contribution conditions of masonry, i.e full contribution, no contribution and intermediate state where some part of masonry is contributing as diagonal compressive struts. The retrofitting propositions for all these three conditions have been made, analytically, with TSWD systems. It has been explained that for well-defined system subjected to harmonic excitations single frequency TSWDs (STSWD) may be optimally devised. For approximately assessed systems subjected to broad band excitations multiple frequency TSWDs (MTSWD) systems more robust.<br />The existing procedure for design of retrofitting system is iterative and cumbersome due to involvement of many approximately assessed parameters. Design charts for effectiveness of retrofitting system have been developed to obtain a quick estimate of mass ratio required for desired response reduction. Two simplified non-iterative methods have been developed one for accurately assessed and another for approximately assessed structures. These methods give a quick estimate of required mass ratio for desired performance. <br />The analytically made retrofitting propositions have been verified experimentally through the shake table tests on scaled model of the ES in coupling with TSWDs. The main feature of the experimental study is that ES has been scaled down dimensionally such that SM≡ES, but dynamic parameters of the structure have not been scaled and SM is equal to ES. The TSWD, tested with SMs in laboratory, is proposed for actual field execution.<br />The process of experimental validations of SM-TSWD interaction has been accomplished through 157 test runs. The interpretation of these experimental observations has led to simplified empirical correlations between relevant dynamic parameters of TSWD and ES. These empirical relations are valid for harmonic excitations only. However for broad band earthquake excitation the analytically devised propositions are only trend indicative and not valid. The robustness of the MTSWD system over STSWD system against earthquake excitations has been substantiated. An adequate factor of safety may be incorporated for applying the inferences from harmonic excitations to broad band excitations for MTSWD based retrofitting system. This study proposes a factor of safety 3.<br />Two non-dimensional parameters, as effectiveness ratio quantifying percentage response reduction and specific mass ratio defined as mass ratio required for one percentage effectiveness of the retrofitting system, for evaluating the performance of TSWD based retrofitting system have been introduced.<br />Since the analytical proposals are not valid for broad band excitations, it is proposed that for real life situations, the TSWD based retrofitting systems, should be designed on the basis of experimental evidence. A Hardware interactive soft path methodology for design of TSWD retrofitting system has been devised. As there is no scaling of dynamic properties between SM and ES and the TSWD used in coupling with SM has to be installed at ES, hence the experimental inferences of SM-TSWD coupling can be extrapolated to retrofitting of the ES, as ES-TSWD coupling. Thus a TSWD based retrofitting system may be designed for desired response reduction of ES. <br />The required sloshing water mass is to be accommodated in multiple TSWDs with their frequencies distributed around the frequency of ES. The system as a whole behaves as a robust multiple TSWD retrofitting regime with assurance of replicating laboratory performance in real life seismic eventuality.<br />From experimental observations for 25% effectiveness of TSWD system against broad band excitation the required mass ratio is 2.59% for SM and same is valid for ES also, accordingly an execution scheme has been proposed. <br />This research presents a simple and non-invasive retrofit scheme utilising tuned sloshing water dampers in RC frame masonry infilled structures. The design approach utilises the theoretical knowledge in conjunction with experimental verifications for TSWD based retrofitting system. The retrofitting with TSWDs may be accomplished by modifying the existing overhead tank and installing additional tanks of optimally tuned geometry for desired response reduction. The installation of TSWD based retrofitting system provides all time preparedness against earthquake, without interfering with the structural, architectural and occupancy requirements. The proposed TSWD based retrofitting system essentially a technique of absorbing seismic energy through sloshing action of water.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="f8aa8a14278cf4dd4619af9575b49553" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912138,"asset_id":8536325,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912138/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536325"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536325"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536325; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8536037"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8536037/SEISMIC_RETROFITTING_BY_TUNED_SLOSHING_WATER_DAMPER"><img alt="Research paper thumbnail of SEISMIC RETROFITTING BY TUNED SLOSHING WATER DAMPER" class="work-thumbnail" src="https://attachments.academia-assets.com/34912037/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8536037/SEISMIC_RETROFITTING_BY_TUNED_SLOSHING_WATER_DAMPER">SEISMIC RETROFITTING BY TUNED SLOSHING WATER DAMPER</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Structural response control, with tuned sloshing water dampers (TSWD) may be adopted as seismic r...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Structural response control, with tuned sloshing water dampers (TSWD) may be adopted as seismic<br />retrofitting measure for the existing structures (ES).The water tanks of designed geometry rigidly attached with the<br />ES at strategic locations behave as TSWD. Response reduction during earthquake is affected by energy dissipated<br />through sloshing of water mass.<br />The energy dissipation is dependent on mutual tuning of ES and TSWD, mass ratio, damping ratio of<br />TSWD and damping ratio of ES. Larger the mass ratio more will be the response reduction. Mutual dependency and<br />uncertainties involved with the assessment of dynamic properties of ES make the design process of retrofitting<br />system iterative and cumbersome.<br />Multiple dampers, with their frequencies distributed around the first mode frequency of ES, shall perform<br />more robustly. The desired mass ratio may be accommodated in multiple tanks. The geometry of these tanks may be<br />moderated in such a way that it behaves as multiple dampers. The multiple TSWD system will overcome the errors<br />due to assessment approximations of dynamic properties of ES and TSWD.<br />The performance of the retrofitting system is assessed by reduction in maximum structural displacement<br />affected. Design charts in the form of effectiveness ratio, depicting the performance of TSWDs, have been presented<br />which reduces iterative computational effort. The retrofitting methodology is explained by example of an existing<br />four story structure. The effectiveness and robust performance of multiple TSWD has been demonstrated. The<br />method ensures all time preparedness of the ES, without occupancy and structural interference, against earthquake.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="c0e996d638d2ead8fd86d7011d42f40a" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34912037,"asset_id":8536037,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34912037/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8536037"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8536037"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8536037; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535989"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535989/Disaster_Resistant_Collapse_Proof_Mass_Housing"><img alt="Research paper thumbnail of Disaster Resistant Collapse Proof Mass Housing" class="work-thumbnail" src="https://attachments.academia-assets.com/34911979/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535989/Disaster_Resistant_Collapse_Proof_Mass_Housing">Disaster Resistant Collapse Proof Mass Housing</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Housing is the most important tool of social security and it should be ensured by durable and str...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Housing is the most important tool of social security and it should be ensured by durable and strong<br />construction practices along with affordability.<br />In Indian reference the housing problem has been compounded by the fact that 59% area of our country is<br />disaster prone, to one or other kind of natural calamity. Of all the natural calamities earth quake does not give<br />any reaction time what so ever for hazard avoidance and mitigation. The suddenness makes earth quake most<br />feared natural disaster.<br />Settlements housing weaker sections of society are more vulnerable to such disasters as their houses are<br />poorly engineered and constructed with locally available material and technology, having very low score on<br />disaster resistance and sustainability count. A general feature of low cost housing concepts is maximum<br />replacement of cement and steel with locally available materials and vernacular technology. Avoidance of steel<br />and concrete increases the construction mass which increases the amount of seismic impact on such structures.<br />In Indian socio-economic context, low cost housing proposals do not get acceptability with common man, due to<br />lack of durability.<br />In the present paper a pre-engineered pre-cast design for rural mass housing, utilising most versatile and<br />durable building materials, concrete and steel as main constituent is proposed. This is less massive but<br />technology and labour intensive. The design and construction methodology adopted, results in light and quick<br />construction.<br />The proposed design incorporates base isolation through horizontal decoupling and seismic energy<br />dissipation through friction, flexibility. A collapse proof failure mode has been devised, which can avoid loss of<br />life and property. This design may be used with great advantage in aftermath of a seismic calamity, when after<br />shocks are still being experienced, by virtue of being light, quick to construct, disaster resistant, and<br />economical. The design is superior on sustainability parameters also.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="415b0bc37147859cc7a69010c46b31d6" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34911979,"asset_id":8535989,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34911979/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8535989"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8535989"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8535989; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=8535989]").text(description); $(".js-view-count[data-work-id=8535989]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 8535989; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='8535989']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-a9bf3a2bc8c89fa2a77156577594264ee8a0f214d74241bc0fcd3f69f8d107ac.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535895"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535895/SEISMIC_RETROFITTING_OF_EXISTING_STRUCTURES_BY_TUNED_SLOSHING_WATER_DAMPER_AN_EXPERIMENTAL_STUDY"><img alt="Research paper thumbnail of SEISMIC RETROFITTING OF EXISTING STRUCTURES BY TUNED SLOSHING WATER DAMPER: AN EXPERIMENTAL STUDY" class="work-thumbnail" src="https://attachments.academia-assets.com/34911925/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535895/SEISMIC_RETROFITTING_OF_EXISTING_STRUCTURES_BY_TUNED_SLOSHING_WATER_DAMPER_AN_EXPERIMENTAL_STUDY">SEISMIC RETROFITTING OF EXISTING STRUCTURES BY TUNED SLOSHING WATER DAMPER: AN EXPERIMENTAL STUDY</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The existing medium height structures (ES) may be retrofitted with tuned sloshing water dampers (...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The existing medium height structures (ES) may be retrofitted with tuned sloshing water dampers (TSWD), for mitigating increased seismic demands. The performance of the TSWD as response reducing device against vibratory loads has been investigated through shake table tests, in coupling with scaled model(SM) of ES. The optimum coupling parameters of the TSWD with respect to SM have been obtained through free vibration tests. Subsequently the optimally tuned SM-TSWD coupling has been subjected to forced sinusoidal vibration of the resonant frequency. The effectiveness of the retrofitting regime has also been tested against ground motion time histories. The experimental data have been analytically extrapolated for application to the real life existing structure (ES). A response reduction of the order of 25% has been predicted for the ES with 1.5% mass ratio. A seismic retrofitting design methodology of ‘hardware interactive soft path’ for assured displacement response reduction has been devised.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="9a7962f21f54af62df775a1203d0e5ca" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34911925,"asset_id":8535895,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34911925/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8535895"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8535895"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8535895; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535851"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535851/EFFECTIVENESS_OF_MULTIPLE_TSWD_FOR_SEISMIC_RESPONSE_CONTROL_OF_MASONRY_INFILLED_RC_FRAMED_STRUCTURE"><img alt="Research paper thumbnail of EFFECTIVENESS OF MULTIPLE TSWD FOR SEISMIC RESPONSE CONTROL OF MASONRY INFILLED RC FRAMED STRUCTURE" class="work-thumbnail" src="https://attachments.academia-assets.com/34911888/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535851/EFFECTIVENESS_OF_MULTIPLE_TSWD_FOR_SEISMIC_RESPONSE_CONTROL_OF_MASONRY_INFILLED_RC_FRAMED_STRUCTURE">EFFECTIVENESS OF MULTIPLE TSWD FOR SEISMIC RESPONSE CONTROL OF MASONRY INFILLED RC FRAMED STRUCTURE</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Existing masonry infilled RC framed structures (ES) can be retrofitted for improved performance u...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Existing masonry infilled RC framed structures (ES) can be retrofitted for improved performance<br />under earthquake loading by structural response control methodology, with tuned sloshing water<br />damper (TSWD). The retrofitting may be accomplished by modifying the existing over head tank<br />and installing additional tanks of tuned geometry for required response reduction.<br />The required water mass is provided in multiple TSWDs with their frequencies distributed<br />around the frequency of ES. The system as a whole behaves as multiple TSWD retrofitting regime<br />with robustness and reliability. This system takes care of the assessment approximations in dynamic<br />properties of the ES.<br />The retrofitting method aims for reduced displacement during earthquake. The efficiency of the<br />retrofitting system may be quantified by effectiveness ratio. Design charts have been developed<br />which reduces iterative computational efforts.<br />The simplicity of design and execution of the proposed retrofitting regime is explained by<br />example of an existing four story structure.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="52f5a6943dd3d40eab4bb10d0907a60b" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":34911888,"asset_id":8535851,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/34911888/download_file?s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="8535851"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="8535851"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 8535851; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="8535791"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/8535791/Seismic_Response_Control_Systems_for_Structures"><img alt="Research paper thumbnail of Seismic Response Control Systems for Structures" class="work-thumbnail" src="https://attachments.academia-assets.com/34911830/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/8535791/Seismic_Response_Control_Systems_for_Structures">Seismic Response Control Systems for Structures</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Structures constructed in developing world are typically RC frames with masonry infill. These str...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Structures constructed in developing world are typically RC frames with masonry infill. These structures<br />have little resistance for lateral loads caused by earthquake and wind. Even for adequately designed structures<br />also, due to permissible deformation beyond elastic limits, failure of masonry causes severe loss of life and<br />property. In the case of structures designed to sustain excessive deformation such as of defence establishments,<br />functioning and serviceability of machines and equipment installed therein are adversely affected. This co-lateral<br />damage may be reduced by adopting another design philosophy of structure response control. In this methodology,<br />a supplementary damping device is incorporated in the primary structure, which absorbs most of the seismic<br />energy imparted to it, restricting the structural response within serviceable limits. These devices may be passive,<br />active, semi-active or hybrid types. Other than passive all options are technology-intensive and dependent on<br />external energy source, not a favourable proposition for developing nations. Among all the passive devices, tuned<br />liquid dampers (TLDs) promise to be most suitable. Here, existing overhead water tanks (OHWT) may be used<br />as TLD with slight adjustment and modification. This method will be able to control the structural response<br />without putting any extra load on the existing or newly-designed buildings. This paper reviews various types of<br />dampers and discusses evolution of tuned liquid dampers. A method has also been proposed for incorporating<br />TLDs in existing and new structures. 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