[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-136513-105":59,"doc-detail-136513-en":130},{"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":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","estimating-soil-pressure-against-unyielding-surfaces-fdot-grip-meeting","Estimating Soil Pressure Against Unyielding Surfaces - FDOT GRIP Meeting","","Meeting materials outline the design challenge of estimating lateral earth pressure on Mechanically Stabilized Earth (MSE) wall faces when reinforcement becomes tied to an unyielding condition. Conventional active earth pressure assumptions are contrasted with cases such as widening ties, acute corners, and back-to-back (bin-walls), where GEC #11 notes much higher reinforcement tension. The objective is to derive earth pressure coefficients for approved MSE configurations under loosely and highly compacted soil scenarios, supporting improved design methodology for fill behind rigid boundaries.",{"@graph":69,"@context":122},[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":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/estimating-soil-pressure-against-unyielding-surfaces-fdot-grip-meeting/136513/",{"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/estimating-soil-pressure-against-unyielding-surfaces-fdot-grip-meeting/136513.png","ImageObject",300,407,{"name":92,"@type":93},"Đào","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-09-17","2026-08-22",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why is estimating soil pressure harder for MSE walls with unyielding conditions?","Question",{"text":112,"@type":113},"When reinforcement is tied to two walls or near a rigid/unyielding boundary, minor deformations typical of conventional MSE walls are prevented. This leads to much higher tension in the reinforcement, and the resulting soil pressure behind an unyielding surface is not well defined.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What two reinforcement configurations are analyzed in the study?",{"text":117,"@type":113},"Configuration 1 attaches reinforcement to two walls where one yields and the other remains unyielding. Configuration 2 attaches reinforcement to one yielding wall and embeds it in soil near an unyielding surface.",{"name":119,"@type":110,"acceptedAnswer":120},"What soil testing and site preparation steps are included in the project tasks?",{"text":121,"@type":113},"Planned testing includes sieve analysis, relative density, consolidation, compaction, direct shear, moisture content, unit weight, and soil classification. If permitted, additional checks include pH, resistivity, chloride, and sulfate testing.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},136513,1787388029,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":46,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":31},1374402968488,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","Estimating Soil Pressure Against Unyielding Surfaces  \nFDOT GRIP Meeting  \nProject Manager: Rodrigo Herrera, P. E.  \nCo-Project Manager: Jose Hernando, P. E.  \nUF PI: Michael Rodgers, Ph. D.  \nAugust 17th, 2017  \nTopics Covered  \n• Introduction  \n• Background  \n• Objectives  \n• Tasks 1 – 6  \n• Wall configurations  \n• Project benefits  \nIntroduction  \n• Mechanically Stabilized Earth (MSE) Walls are a cost effective option for earth retention systems .  \n– Bridge abutments, highway separations, and when construction space is limited  \n• Reinforced strips or grids are placed between layers of compacted soil and mechanically attached to the wall facing.  \n• Lateral earth pressures exerted on the wall facing by granular backfill are opposed by frictional resistance developed along the surface of the reinforcement  \nBackground  \n• In general design, the lateral earth pressure imposed on a retaining wall is approximately equal to the active lateral earth pressure  \n– Conventional earth pressure theory  \n– Reinforcement embedded in soil and free to move  \n• In certain cases, the reinforcement ties two walls together resulting in an unyielding condition.  \n– Widening conditions (new wall tied to existing wall)  \n– Acute corners  \n– Back to back walls (bin-walls)  \n• The actual soil pressure that results behind an unyielding surface is not well defined  \nBackground  \n• FHWA GEC \\#11 acknowledges that “much higher” tension develops in the reinforcement when walls are tied together  \n• Minor deformations that typically occur in conventional MSE walls are prevented  \n• While GEC \\#11 recognizes the problem, it does not provide a clear recommendation for estimating the pressure of compacted soils  \nUnyielding Condition  \nObjective  \n• Investigate the resulting earth pressure coefficients derived from approved MSE wall configurations in both a loosely and highly compacted soil scenario  \n• In both scenarios, two MSE wall configurations will be investigated simultaneously.  \n– Configuration 1 – reinforcement attached to two walls where one wall is yielding and the other wall is unyielding  \n– Configuration 2 – reinforcement attached to one yielding wall and embedded in soil near an unyielding surface  \n• The outcome can then be used to address design methodology and earth pressure coefficients for earthen fill compacted behind unyielding surfaces  \nTask Outline  \n1. Literature review and preliminary design  \n2. Final design, site prep, and materials purchasing  \n3. MSE wall trial 1 – loosely compacted soil  \n4. MSE wall trial 2 – highly compacted soil  \n5. Draft final report and closeout teleconference  \n6. Final report  \nTask 1  \n• Extensive literature review of current design practicesand standards will be conducted  \n– Ensure the MSE wall configurations adhere to the FDOT standard specifications for road and bridge construction  \n– Comply with AASHTO design code.  \n• Construction and quality control procedures developed within the industry will also be investigated  \n– Ensures proper construction and sequencing takes place  \n– Provides structures that are representative of typical MSEwall construction  \nTask 2  \n• Soil testing:  \n– Sieve analysis  \n– Relative density  \n– Consolidation  \n– Compaction  \n– Direct shear  \n– Moisture content  \n– Unit weight  \n– Soil classification  \n• If permitted:  \n– pH, resistivity, chloride, and sulfate testing","cbCaiiupgKwtdxBF","https://ap.wps.com/l/cbCaiiupgKwtdxBF","pdf",421445,"English","# Topics Covered\n## Introduction\n## Background\n## Unyielding Condition\n## Objective\n## Task Outline\n## Task 1\n## Task 2","[{\"question\":\"Why is estimating soil pressure harder for MSE walls with unyielding conditions?\",\"answer\":\"When reinforcement is tied to two walls or near a rigid/unyielding boundary, minor deformations typical of conventional MSE walls are prevented. This leads to much higher tension in the reinforcement, and the resulting soil pressure behind an unyielding surface is not well defined.\"},{\"question\":\"What two reinforcement configurations are analyzed in the study?\",\"answer\":\"Configuration 1 attaches reinforcement to two walls where one yields and the other remains unyielding. Configuration 2 attaches reinforcement to one yielding wall and embeds it in soil near an unyielding surface.\"},{\"question\":\"What soil testing and site preparation steps are included in the project tasks?\",\"answer\":\"Planned testing includes sieve analysis, relative density, consolidation, compaction, direct shear, moisture content, unit weight, and soil classification. If permitted, additional checks include pH, resistivity, chloride, and sulfate testing.\"}]","Estimating Soil Pressure Against Unyielding Surfaces - FDOT GRIP Meeting | PDF"]