[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-663417-105":59,"doc-detail-663417-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","foundation-wall-below-grade-wall-thermal-assembly-rsi-calculation","FOUNDATION WALL - Below Grade Wall - Thermal Assembly RSI Calculation","","Below grade foundation wall thermal assembly calculations are provided using Parallel Path and Iso Planes methods to determine total effective thermal resistance (RSI). Multiple assembly variants are listed, each specifying exterior damp proofing, concrete foundation wall thickness, stud framing size and spacing, insulation type and thickness, air/vapour barrier material location, and interior drywall. Effective RSI values and required target RSI of 3.97 are compared, with totals reported for ICF, XPS plus batt, dual batt systems, and spray foam configurations, including referencing standard tables for framing/cavity percentages and material thermal resistance.",{"@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/foundation-wall-below-grade-wall-thermal-assembly-rsi-calculation/663417/",{"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/foundation-wall-below-grade-wall-thermal-assembly-rsi-calculation/663417.png","ImageObject",300,407,{"name":92,"@type":93},"EvelynWrites","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What method is used to calculate the effective thermal resistance for the foundation wall assemblies?","Question",{"text":112,"@type":113},"The document uses Parallel Path calculation combined with Iso Planes values to compute total effective thermal assembly RSI effective.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What is the required effective RSI target for each below grade wall assembly?",{"text":117,"@type":113},"Each assembly lists a required effective RSI of 3.97 to be met or compared against the calculated effective RSI.",{"name":119,"@type":110,"acceptedAnswer":120},"Which components are included in the assembly detail when computing RSI?",{"text":121,"@type":113},"Each detail includes soil and exterior damp proofing layers, the concrete foundation wall, air spaces to studs, stud framing at specified spacing, insulation (ICF, XPS plus batt, dual batt, or spray foam), air/vapour barrier (poly), interior air film, and interior drywall thickness.","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},663417,1793227627,{"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":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},687212989558,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","FOUNDATION WALL INSULATED CONCRETE FORMS (ICF) = 4.03 RSI  \nTYPE OF ASSEMBLY: Below Grade Wall REQUIRED EFFECTIVE RSI: 􀀃 3.97  \n\n| Assembly detail: (indicate type and location of air barrier and vapour barrier in detail drawing) |  |\n| --- | --- |\n| | 􀀃 Exterior Damp Proofing\u003Cbr>􀀃 R22 (Min R 21 .41) Insulated Concrete Forms\u003Cbr>􀀃 ½”(12 .7mm) Drywall |\n\n\n|  | Parallel Path Calc: |  | Iso Planes Values: |\n| --- | --- | --- | --- |\n| Material (include thickness/spacing): | Thermal Resistance\u003Cbr>at Framing (RSI) *(2) : | Thermal Resistance at Cavity (RSI) *(2) : | Thermal Resistance *(2) : |\n| Soil |  |  | 0.0 |\n| Exterior Damp Proofing |  |  | 0.0 |\n| R22 Insulated Concrete Forms |  |  | 3.83 |\n| ½” Drywall |  |  | 0.08 |\n| Interior Air Film |  |  | 0.12 |\n|  |  |  |  |\n| Sub-total: | 0 | 0 | 4.03 |\n| Framing/Cavity percentage *(1) : | % | % |  |\n\nRSI parallel =  \nRSI parallel =  \n 100  = RSI parallel effective (Frame % ÷ RSI Frame) + (Cavity % ÷ RSI Cavity)  \n 100  = 0 RSI parallel effective ( 0 ÷ 0 ) + ( 0 ÷ 0 )  \nRSI parallel effective + Iso Planes total = TOTAL EFFECTIVE THERMAL ASSEMBLY RSI effective  \n( 0 ) + ( 4.03 ) = 4.03 RSI effective  \n*(1) Refer to Table A-[9.36.2.4.(1)A for framing/cavity](9.36.2.4.(1)A for framing/cavity) percentage  \n*(2) Refer to Table A-[9.36.2.4](9.36.2.4). (1)D for thermal resistance of materials in RSI  \nFOUNDATION WALL EXTERIOR 1” XPS 2x6 @ 24” oc R20 BATT = 4.06  \nTYPE OF ASSEMBLY: Below Grade Wall REQUIRED EFFECTIVE RSI: 􀀃 3.97  \n\n| Assembly detail:\u003Cbr>| 􀀃 1” Extruded styrofoam (XPS)\u003Cbr>􀀃 Exterior Damp Proofing\u003Cbr>􀀃 8” Concrete Foundation Wall\u003Cbr>􀀃 ½” Air space\u003Cbr>􀀃 2x6 SPF \\#2 Studs @ 24” on centre\u003Cbr>􀀃 R20 Batt Insulation\u003Cbr>􀀃 6 Mil Poly (*Air & Vapour Barrier*)\u003Cbr>􀀃 ½”(12 .7mm) Drywall |\n| --- | --- |\n\n\n|  | Parallel Path Calc: |  | Iso Planes Values: |\n| --- | --- | --- | --- |\n| Material (include thickness/spacing): | Thermal Resistance\u003Cbr>at Framing (RSI) *(2) : | Thermal Resistance at Cavity (RSI) *(2) : | Thermal Resistance *(2) : |\n| Soil |  |  | 0.0 |\n| 1” Extruded polystyrene Type 2, 3, 4 |  |  | 0.88 |\n| Exterior Damp Proofing |  |  | 0.0 |\n| 8” Concrete Foundation Wall |  |  | 0.08 |\n| ½” Air space |  |  | 0.09 |\n| 2x6 Studs @ 24” o/c | 1.19 | - | - |\n| R20 Batt Insulation | - | 3.52 | - |\n| 6 Mil Poly |  |  | 0.0 |\n| ½” Drywall |  |  | 0.08 |\n| Interior Air Film |  |  | 0.12 |\n|  |  |  |  |\n| Sub-total: | 1.19 | 3.52 | 1.25 |\n| Framing/Cavity percentage *(1) : | 13% | 87% |  |\n\nRSI parallel =  100  = RSI parallel effective  \n(Frame % ÷ RSI Frame) + (Cavity % ÷ RSI Cavity)  \nRSI parallel =  100  = 2.81 RSI parallel effective  \n( 13 ÷ 1.19 ) + ( 87 ÷ 3.52 )  \nRSI parallel effective + Iso Planes total = TOTAL EFFECTIVE THERMAL ASSEMBLY RSI effective  \n( 2.81 ) + ( 1.25 ) = 4.06 RSI effective *(1) Refer to Table A-[9.36.2.4.(1)A for framing/cavity](9.36.2.4.(1)A for framing/cavity) percentage  \n*(2) Refer to Table A-[9.36.2.4](9.36.2.4). (1)D for thermal resistance of materials in RSI  \nFOUNDATION WALL 2-2x4 @ 24 oc R14 R12 BATT = 3.99 RSI  \nTYPE OF ASSEMBLY: Below Grade Wall REQUIRED EFFECTIVE RSI: 􀀃 3.97  \n\n| Assembly detail: (indicate type and location of air barrier and vapour barrier in detail drawing) |  |\n| --- | --- |\n| | 􀀃 Exterior Damp Proofing\u003Cbr>􀀃 8” Concrete Foundation Wall\u003Cbr>􀀃 1/2” Airspace\u003Cbr>􀀃 2-2x4 SPF \\#2 Studs @ 24” on centre\u003Cbr>􀀃 R14 Batt Insulation\u003Cbr>􀀃 R12 Batt Insulation\u003Cbr>􀀃 6 Mil Poly (*Air & Vapour Barrier*)\u003Cbr>􀀃 ½”(12 .7mm) Drywall |\n\n\n|  | Parallel Path Calc: |  | Iso Planes Values: |\n| --- | --- | --- | --- |\n| Material (include thickness/spacing): | Thermal Resistance\u003Cbr>at Framing (RSI) *(2) : | Thermal Resistance at Cavity (RSI) *(2) : | Thermal Resistance *(2) : |\n| Soil |  |  | 0.0 |\n| Exterior Damp Proofing |  |  | 0.0 |\n| 8” Concrete Foundation Wall |  |  | 0.08 |\n| ½” Air Space |  |  | 0.09 |\n| 2-2x4 Studs @ 24” o/c | 1.51 | - | - |\n| R 14 Batt Insulation | - | 2.46 | - |\n| R 12 Batt Insulation |  | 2.11 |  |\n| 6 Mil Poly |  |  | 0.0 |\n| ½” Dry","cbCaiaVCp8ssS53L","https://ap.wps.com/l/cbCaiaVCp8ssS53L","pdf",1090027,23,"English","# Assembly Variants\n## ICF Foundation Wall (R22)\n## XPS + 2x6 Studs (R20 Batt)\n## Dual Batt System (R14 + R12)\n## Spray Foam Medium Density (2x6 SPF)","[{\"question\":\"What method is used to calculate the effective thermal resistance for the foundation wall assemblies?\",\"answer\":\"The document uses Parallel Path calculation combined with Iso Planes values to compute total effective thermal assembly RSI effective.\"},{\"question\":\"What is the required effective RSI target for each below grade wall assembly?\",\"answer\":\"Each assembly lists a required effective RSI of 3.97 to be met or compared against the calculated effective RSI.\"},{\"question\":\"Which components are included in the assembly detail when computing RSI?\",\"answer\":\"Each detail includes soil and exterior damp proofing layers, the concrete foundation wall, air spaces to studs, stud framing at specified spacing, insulation (ICF, XPS plus batt, dual batt, or spray foam), air/vapour barrier (poly), interior air film, and interior drywall thickness.\"}]","FOUNDATION WALL - Below Grade Wall - Thermal Assembly RSI Calculation | PDF",58]