[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-665198-105":59,"doc-detail-665198-en":134},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":127,"head_meta":129,"extra_data":131,"updated_unix":133},105,"en","sdre144-gra-1-9-grating-detail-drawing","SDRE14/4 - GRA 1-9 - Grating Detail Drawing","","Drawing set for Land Transport Authority standard details covering pedestrian and vehicular grating components for sumps and drains, including in-fill concrete grating and supporting frames. Specifies grating type, spacing and dimensions by drain width and depth ranges, and requirements for opening angle, shop fabrication and welding slag removal, hot-dip galvanising to ISO 1461:2009, and design/testing conformity to SS 363. Includes scale references, sheet numbering, revision history and additional frame/fishtail construction notes, plus polyurethane sound damper physical-property requirements.",{"@graph":69,"@context":126},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/sdre144-gra-1-9-grating-detail-drawing/665198/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/sdre144-gra-1-9-grating-detail-drawing/665198.png","ImageObject",300,407,{"name":92,"@type":93},"WPS_1790064749","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118,122],{"name":109,"@type":110,"acceptedAnswer":111},"What are the key requirements for M.S. pedestrian grating fabrication and corrosion protection?","Question",{"text":112,"@type":113},"The drawing requires shop fabrication with weld slags removed, ability to open more than 106°, and hot-dip galvanising (except fishtails) to ISO 1461:2009. It also states design/testing must conform to SS 363 where applicable.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How is the pedestrian grating type selected based on drain width and spacing?",{"text":117,"@type":113},"A table maps drain width (mm) to drain depth (m), grating type sizes (e.g., 700×850 or 850×1000) and spacing (e.g., 6 m, 18 m, or staggered layouts). Larger ranges use specified sizes and spacing rules as listed in the document.",{"name":119,"@type":110,"acceptedAnswer":120},"Are these grating details allowed for footpaths or cycling paths?",{"text":121,"@type":113},"No. The document states that the grating for sump/drain without mild steel plate shall not be used on footpaths or cycling paths.",{"name":123,"@type":110,"acceptedAnswer":124},"What properties are required for the polyurethane sound damper?",{"text":125,"@type":113},"The drawing lists physical properties and test methods, requiring elongation >=650% (ASTM D-412:2006a), tear strength >=16 N/mm (ASTM D-624:2006a), and tensile strength >=2.5 N/mm² (ASTM D-412:2006a). It also notes peel-strength and warranty/adhesion performance constraints for the applied sound damper.","https://schema.org",{"og:url":83,"og:type":128,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":130,"canonical":83},"index,follow",{"doc_id":132,"site_id":62},665198,1793292863,{"code":4,"msg":5,"data":135},{"doc_id":132,"user_id":136,"nickname":92,"user_avatar":137,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":138,"file_id":139,"file_url":140,"file_type":141,"file_size":142,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":52,"language":143,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":144,"faqs":145,"seo_title":146,"seo_description":67,"update_tm":133,"read_time":147},3985747859154,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","REVISIONPEDESTRIAN GRATING FOR SUMP/DRAIN-WITHOUTMILD STEEL PLATELTA/SDRE14/4/GRA1PEDESTRIAN CONCRETE IN-FILL GRATING FOR SUMP/DRAINLTA/SDRE14/4/GRA2FRAME FOR PEDESTRIAN GRATINGLTA/SDRE14/4/GRA3VEHICULAR GRATING FOR MANHOLES (SHEET 1 OF 2)LTA/SDRE14/4/GRA4AVEHICULAR GRATING FOR MANHOLES (SHEET 2 OF 2)LTA/SDRE14/4/GRA5AVEHICULAR GRATING FOR DRAINS (SHEET 1 OF 2)LTA/SDRE14/4/GRA6AVEHICULAR GRATING FOR DRAINS (SHEET 2 OF 2)LTA/SDRE14/4/GRA7AMANHOLE COVER AND FRAMELTA/SDRE14/4/GRA8ROADSIDE MANHOLE GRATINGLTA/SDRE14/4/GRA9A  \nDRAWING TITLE  \nDRAWING NO.  \nDETAILOF M.S.PEDESTRIAN GRATINGSECTION A-ASCALE 1:5  \n| NOTES:  \u003Cbr>1.The type &spacing for M.S.pedestrian gratings shall be as follows:  \u003Cbr>2.The M.S.Grating must be able to be opened more than 106°   | 3.Gratings and frames are to be shop fabricated and all weld slags to  \u003Cbr>be removed.  \u003Cbr>4.The complete assembly except fishtails are to be galvanised by hot-dip  \u003Cbr>galvanising process in accordance with ISO 1461:2009.  \u003Cbr>5.For internal drain width>4m,pedestrian grating shall be provided in  \u003Cbr>accordance with PUB's Latest Code of Practice for Surface Water  \u003Cbr>Drainage.  \u003Cbr>6.For grating of size>850mmx1000mm,it shall be designed by Professional[  \u003Cbr>Engineer.The grating design /testing shall conform to SS 363.  \u003Cbr>7.This grating for sump/drain without mild steel plate shall not be used on  \u003Cbr>footpath or cycling paths.   |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  | STANDARD DETAIL   | Land Transport Authority   |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  |  |  | PEDESTRIAN GRATING  \u003Cbr>FOR SUMP/DRAIN-  \u003Cbr>WITHOUT MILD STEEL  \u003Cbr>PLATE   |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  | DRAWING NO.  \u003Cbr>LTA/SDRE14/4/GRA1   |  |  | REV.  \u003Cbr>C   |\n|  |  | C   | APR 2022   |  |  |  |  |  |\n|  |  | B   | SEP2017   |  |  |  |  |  |\n|  |  |  |  |  | DATE OF ISSUE  \u003Cbr>1st APR 2014   | SCALE  \u003Cbr>AS SHOWN   | SHEET NO.  \u003Cbr>1 OF 1   |  |\n|  |  | A   | OCT 2015   |  |  |  |  |  |\n|  |  | REV.   | DATE   |  |  |  |  |  |\n\n\n| DRAIN WIDTH  \u003Cbr>(mm)   | DRAIN DEPTH  \u003Cbr>(m)   | TYPE OF GRATING  \u003Cbr>(mm)   | SPACING  \u003Cbr>(m)   |\n| --- | --- | --- | --- |\n| 600-≤750   | -   | 700×850   | 6   |\n| >750-\u003C2000   | ≤1   | 850×1000   | 6   |\n|  | >1   |  | 18   |\n| 2000-4000   | -   | 850×1000   | (Staggered)   |\n|  | -   | 1500×1500   | 500   |\n\n4-1  \nSECTION A-ASCALE 1:5SCALE 1:5DETAILOF PEDESTRIAN CONRETE IN-FILL GRATINGSCALE 1:10  \nSECTION B-B  \n| SECTIONC-C   |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| NOTES:  \u003Cbr>1.The type &spacing for pedestrian gratings shall be as follows:  \u003Cbr>2.The grating must be able to be opened more than 106°   | 3.Gratings and frames are to be shop fabricated and all weld slags to  \u003Cbr>be removed.  \u003Cbr>4.The complete assembly except fishtails are to be galvanised by hot-dip  \u003Cbr>galvanising process in accordance with ISO 1461:2009.  \u003Cbr>5.For internal drain width>4m,pedestrian grating shall be provided in  \u003Cbr>accordance with PUB's Latest Code of Practice for Surface Water  \u003Cbr>Drainage.  \u003Cbr>6.For grating of size>850mmx1000mm,it shall be designed by Professional  \u003Cbr>Engineer.The grating design /testing shall conform to SS 363.  \u003Cbr>7.Light weight concrete of LC 25/30 shall be used for the concrete in-fill.  \u003Cbr>8.Similar light weight concrete as specified in note 7 may be used as  \u003Cbr>directed by S.O.   | SCALE 1:5   |  |  |  |  |  |  |\n|  |  |  |  | STANDARD DETAIL   | Land Transport Authority   |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  |  |  | PEDESTRIAN CONCRETE  \u003Cbr>IN-FILL GRATING  \u003Cbr>FOR SUMP/DRAIN   |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |\n|  |  | -  \u003Cbr>D   | APR 2024   |  | DRAWING NO.  \u003Cbr>LTA/SDRE14/4/GRA2   |  |  | REV.  \u003Cbr>D   |\n|  |  | C   | APR 2019   |  |  |  |  |  |\n|  |  | B   | SEP2017   |  |  |  |  |  |\n|  |  ","cbCaihVWt7jN4ZuG","https://ap.wps.com/l/cbCaihVWt7jN4ZuG","pdf",1566767,"English","# Notes\n## Material and fabrication requirements\n## Galvanising and design/testing standards\n## Application limits for mild steel plate\n# Standard details\n## Pedestrian grating for sump/drain without mild steel plate (Sheet 1 of 2)\n## Pedestrian concrete in-fill grating for sump/drain (GRA2)\n## Frames for pedestrian grating\n## Vehicular gratings for manholes and drains (Sheets 1-2)\n## Manhole cover and frame\n## Roadside manhole grating\n# Sound damper physical properties","[{\"question\":\"What are the key requirements for M.S. pedestrian grating fabrication and corrosion protection?\",\"answer\":\"The drawing requires shop fabrication with weld slags removed, ability to open more than 106°, and hot-dip galvanising (except fishtails) to ISO 1461:2009. It also states design/testing must conform to SS 363 where applicable.\"},{\"question\":\"How is the pedestrian grating type selected based on drain width and spacing?\",\"answer\":\"A table maps drain width (mm) to drain depth (m), grating type sizes (e.g., 700×850 or 850×1000) and spacing (e.g., 6 m, 18 m, or staggered layouts). Larger ranges use specified sizes and spacing rules as listed in the document.\"},{\"question\":\"Are these grating details allowed for footpaths or cycling paths?\",\"answer\":\"No. The document states that the grating for sump/drain without mild steel plate shall not be used on footpaths or cycling paths.\"},{\"question\":\"What properties are required for the polyurethane sound damper?\",\"answer\":\"The drawing lists physical properties and test methods, requiring elongation \\u003e=650% (ASTM D-412:2006a), tear strength \\u003e=16 N/mm (ASTM D-624:2006a), and tensile strength \\u003e=2.5 N/mm² (ASTM D-412:2006a). It also notes peel-strength and warranty/adhesion performance constraints for the applied sound damper.\"}]","SDRE14/4 - GRA 1-9 - Grating Detail Drawing | PDF",25]