[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-571191-105":53,"doc-detail-571191-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","nbc-duct-sizing-branch-duct-and-trunk-duct-sizing","NBC Duct Sizing - Branch Duct and Trunk Duct Sizing","","Residential ventilation duct sizing sheet for design and performance compliance with NBC 2015-9.32. Includes a branch duct sizing table (Table 9.32.3.11.A) covering branch IDs, locations, maximum duct lengths, total length calculations with smooth and flex sections, required airflow, duct shape, and duct size. Provides trunk duct sizing with servicing branch combinations, maximum branch length selection, airflow totals, and duct sizing fields. Also includes imperial conversion references and preparation/signature blocks for official use.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/nbc-duct-sizing-branch-duct-and-trunk-duct-sizing/571191/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/nbc-duct-sizing-branch-duct-and-trunk-duct-sizing/571191.png","ImageObject",442,249,{"name":88,"@type":89},"Danger Angel","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-18","2026-10-13",true,{"@type":98,"interactionType":99,"userInteractionCount":73},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"What standard does the duct sizing sheet reference for residential ventilation design?","Question",{"text":108,"@type":109},"It references NBC 2015-9.32 and includes tables for duct sizing under that section.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What information is captured in the Branch Duct Sizing table?",{"text":113,"@type":109},"It records branch ID, location, maximum duct length (from hood to grille), airflow, duct shape, and duct size, along with total length calculations using smooth and flex lengths.",{"name":115,"@type":106,"acceptedAnswer":116},"How does the Trunk Duct Sizing section relate to the branch ducts?",{"text":117,"@type":109},"It lists trunk IDs and the servicing branch IDs, uses maximum branch length information, and provides airflow totals and duct sizing for the trunk run.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},571191,1792359852,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":73,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":9,"language":135,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":136,"faqs":137,"seo_title":138,"seo_description":61,"update_tm":139,"read_time":4},962090769052,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","RESET  \n\n| NBC DUCT SIZING-BRANCH DUCT\u003Cbr>for design and performance of residential ventilation systems to NBC 2015-9.32 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 1. Design Condition |  |  |  |  |  |  |  |  |  | 2. Equipment |  |  |  | HRV/ERV Inline Fan |  |  |  |  |  |  |\n| Location:   System:   Design Airflow:   cfm ESP:   \" w.c.\u003Cbr>(Minimum external static pressure of fans according to Table 9 .32.3.10.A) |  |  |  |  |  |  |  |  |  | Make:  \u003Cbr>Model:   Equipment Rated Airflow:   cfm @   \" w.c. |  |  |  |  |  |  |  |  |  |  |\n|  3. Branch Duct Sizing (Table 9.32.3.11.A)  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  | Branch ID | Location |  | Max Length of Duct (from ext. hood to int. grille) |  |  |  |  |  |  |  |  |  |  | Airflow |  | Duct Shape |  | Duct Size |  |\n|  |  |  |  | (Smooth Length) + [ 2 x Flex Length ] = Total length |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  | + [ 2 x\u003Cbr>+ [ 2 x\u003Cbr>+ [ 2 x\u003Cbr>+ [ 2 x\u003Cbr>+ [ 2 x\u003Cbr>+ [ 2 x\u003Cbr>+ [ 2 x\u003Cbr>+ [ 2 x |  |  |  | ] =\u003Cbr>] =\u003Cbr>] =\u003Cbr>] =\u003Cbr>] =\u003Cbr>] =\u003Cbr>] =\u003Cbr>] = |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| 4. Trunk Duct Sizing (Table 9.32.3.11.A)  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  | Trunk ID |  | Servicing Branch IDs |  |  |  |  | Max. of Branch Length |  |  |  |  | Airflow |  |  | Duct Shape |  | Duct Size |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  | O/A Supply to Fan |  | All Supply Branches |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  | E/A from Fan |  | All Exhaust Branches |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| NBC Duct Sizing Table 9.32.3.11.A (Imperial Conversion) -For Reference |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| \u003Cbr>NBC Table 9.32.3.11. B (Imperial Conversion) -For Reference |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n| Prepared By: |  |  |  |  |  | HRAI \\#: |  |  |  |  |  | Location: |  |  |  |  |  |  |  |  |\n| Signature: |  |  |  |  |  | Date: |  |  |  |  |  | Official Use: |  |  |  |  |  |  |  |  |\n\n© Copyright HRAI Residential Mechanical Ventilation Design -NBC-2015 9.32 r 07/19","cbCaisxePV8GU8KG","https://ap.wps.com/l/cbCaisxePV8GU8KG","pdf",280290,"English","# Design Condition\n## Equipment\n# Branch Duct Sizing (Table 9.32.3.11.A)\n## Branch ID, Length, Airflow, Duct Size\n# Trunk Duct Sizing (Table 9.32.3.11.A)\n## Servicing Branch IDs and Duct Sizing\n# Reference Imperial Conversion Tables\n## NBC Table 9.32.3.11.A and 9.32.3.11.B\n# Preparation and Sign-Off","[{\"question\":\"What standard does the duct sizing sheet reference for residential ventilation design?\",\"answer\":\"It references NBC 2015-9.32 and includes tables for duct sizing under that section.\"},{\"question\":\"What information is captured in the Branch Duct Sizing table?\",\"answer\":\"It records branch ID, location, maximum duct length (from hood to grille), airflow, duct shape, and duct size, along with total length calculations using smooth and flex lengths.\"},{\"question\":\"How does the Trunk Duct Sizing section relate to the branch ducts?\",\"answer\":\"It lists trunk IDs and the servicing branch IDs, uses maximum branch length information, and provides airflow totals and duct sizing for the trunk run.\"}]","NBC Duct Sizing - Branch Duct and Trunk Duct Sizing | PDF",1791901722]