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It covers terminology (roof, trusses), materials (timber, plywood, fixings, restraint straps), job types (estimating and manufacture), and roof features (gables, hips, dormers, towers). 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It also includes bracing, engineering principles, maths, connections, remedial works, lifted roofs, and fire-related items.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which materials and components are listed under RD.2 Materials?",{"text":117,"@type":113},"The materials section includes timber, nail plates (including corrosion-related use and gap considerations), Posi-Strut, roof finishes (tiles, flat roofs, warm roofs), hangers (types, manual design, bearing lengths), plywood, fixings, restraint straps, and an RD.2.9 Other bucket.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the document approach structural design under engineering principles and bracing?",{"text":121,"@type":113},"It separates guidance into bracing responsibilities and categories (wall bracing, stability bracing, wind girders/posts, ply/OSB bracing, and attic strutting) and engineering principles such as moment, tension/compression, vibration checking, support fixity, and deflection limits. It also outlines loading categories, durations, load paths, wind effects, snow drift, and special loads.","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},663058,1793224837,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":24,"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":143},962090893776,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","Roof Design (RD)  \n\n| Reference | Description |\n| --- | --- |\n| RD.1 | TERMINOLOGY |\n| RD.1.1 | Roof |\n| RD.1.2 | Trusses |\n| RD.1.3 | Intro to Trusses Powerpoint |\n\n\n| RD.2 | MATERIALS |\n| --- | --- |\n| RD.2.1 | Timber |\n| RD.2.2.1 | Nail Plates-General |\n| RD.2.2.2 | Nail Plates-Use in Corrosive Environments |\n| RD.2.2.3 | Nail Plates-Gaps Beneath Plates |\n| RD.2.2.4 | Nail Plates-Field Splice Plates |\n| RD.2.3 | Posi-Strut |\n| RD.2.4.1 | Roof Finishes-Tiles |\n| RD.2.4.2 | Roof Finishes-Flat Roof |\n| RD.2.4.3 | Roof Finishes-Warm Roofs |\n| RD.2.5.1 | Hangers-Hanger Types |\n| RD.2.5.2 | Hangers-Manual Design |\n| RD.2.5.3 | Hangers-Bearing Lengths |\n| RD.2.5.4 | Hangers-Pamir Fabricator Settings |\n| RD.2.5.5 | Hangers-Rotated Hangers in Roof Applications (ITW Cullen) |\n| RD.2.6 | Plywood |\n| RD.2.7 | Fixings |\n| RD.2.8 | Restraint Straps |\n| RD.2.9 | Other |\n\n\n| RD.3 | JOB TYPES |\n| --- | --- |\n| RD.3.1 | Estimating |\n| RD.3.2 | Manufacture |\n\n\n| RD.4 | ROOF FEATURES |\n| --- | --- |\n| RD.4.1 | Gable |\n| RD.4.2 | Hip |\n| RD.4.3 | T Intersection |\n| RD.4.4 | Attic |\n| RD.4.5 | Raised Tie |\n| RD.4.5.1 | Raising the Roof |\n| RD.4.6 | Dog leg corner |\n| RD.4.7 | Openings |\n| RD.4.7.1 | Openings-Roof Light Tolerances |\n| RD.4.7.2 | Openings-Framing at Roof Lights |\n| RD.4.8 | Dormers |\n| RD.4.9 | Towers/Turrets |\n| RD.4.10 | A Guide to Roof Surfaces |\n\n\n| RD.5 | TRUSSES/FRAMES |\n| --- | --- |\n| RD.5.1 | Ways to Frame |\n| RD.5.2 | Trusses or Infill |\n| RD.5.3 | Where to use Girders |\n| RD.5.4 | Gable Ladders |\n| RD.5.4.1 | Gable Ladders-Non structural Items in Pamir |\n| RD.5.5 | Web Selection |\n| RD.5.6 | Cut Trusses-Attics |\n| RD.5.7 | Feature Trusses |\n| RD.5.8 | Valley Trusses |\n| RD.5.9 | Reinforcement / Scabs |\n| RD.5.10.1 | Multi-Part Trusses-Field Splice Plate |\n| RD.5.10.2 | Multi-Part Trusses-Pole Plate / Lapped |\n| RD.5.11 | Attic Trusses-Non-standard support details |\n\n\n| RD.6 | THINGS TO CONSIDER |\n| --- | --- |\n| RD.6.1 | Match Existing |\n| RD.6.2 | Drawing Scales |\n| RD.6.3 | Future Use |\n| RD.6.4 | Eaves Details |\n| RD.6.5 | GRP Dormers |\n| RD.6.6 | Minimum Timber Sizes |\n| RD.6.6.1 | Maximum Truss Spans |\n| RD.6.7 | Centres |\n| RD.6.8.1 | Large Projections-Gables |\n| RD.6.8.2 | Large Projections-Eaves |\n| RD.6.8.3 | Large Projections-Hip |\n| RD.6.9.1 | Ceiling Construction-Suspended Ceiling |\n| RD.6.9.2 | Ceiling Construction-Exposed Ceiling |\n| RD.6.10 | Design Principles-Span to Depth Ratio |\n| RD.6.11 | Design Principles-External Wall Members Designed as Trusses |\n| RD.6.12 | Design Principles-Infill Rafters carrying ceiling finishes |\n\n\n| RD.7 | DESIGN FOR MANUFACTURE |\n| --- | --- |\n| RD.7.1 | Match Groups |\n| RD.7.2 | Economy |\n\n\n| RD.8 | DESIGN FOR TRANSPORT |\n| --- | --- |\n| RD.8.1 | Height Restriction |\n| RD.8.2 | Length Restriction |\n\n\n| RD.9 | DESIGN FOR ERECTION |\n| --- | --- |\n| RD.10 | DESIGN RESPONSIBILITIES |\n\n\n| RD.11 | BRACING |\n| --- | --- |\n| RD.11.1 | Responsibilities |\n| RD.11.2 | Wall Bracing |\n| RD.11.3 | Stability Bracing |\n| RD.11.3.1 | T-Braces |\n| RD.11.4 | Out-of-plane Restraint |\n| RD.11.5 | Wind Girders |\n| RD.11.6 | Wind Posts |\n| RD.11.7 | Ply/OSB Bracing |\n| RD.11.8 | Cantilevers/Stubs |\n| RD.11.9 | Attic Strutting |\n| RD.11.10 | Stress Reversal |\n| RD.11.11 | PD6693-1-Wall Plate Connections |\n\n\n| RD.12 | ENGINEERING PRINCIPLES |\n| --- | --- |\n| RD.12.1 | CSI |\n| RD.12.2 | Moment |\n| RD.12.3 | Tension / Compression |\n| RD.12.4 | EC5 Vibration checking |\n| RD.12.5 | Support Fixity |\n| RD.12.6 | Other |\n| RD.12.7.1 | Deflection-Horizontal |\n| RD.12.7.2 | Deflection-Compound |\n| RD.12.7.3 | Deflection-Differential |\n| RD.12.7.4 | Deflection-14mm Limit for Attic Trusses |\n| RD.12.7.5 | Deflection-Deflectons in Pamir |\n| RD.12.8.1 | Loading-Types |\n| RD.12.8.2 | Loading-Duration |\n| RD.12.8.3 | Loading-Actions |\n| RD.12.8.4 | Loading-Load Paths |\n| RD.12.8.5 | Loading-Site Location |\n| RD.12.8.6.1 | Loading-Snow Drift |\n| RD.12.8.6.2 | Loading-Snow Drift-Spreadsheet |\n| RD.12.7.1 | Loading","cbCaibAk9iuuHHu5","https://ap.wps.com/l/cbCaibAk9iuuHHu5","pdf",200033,"English","# RD.1 Terminology\n# RD.2 Materials\n# RD.3 Job Types\n# RD.4 Roof Features\n# RD.5 Trusses/Frames\n# RD.6 Things to Consider\n# RD.7 Design for Manufacture\n# RD.8 Design for Transport\n# RD.9 Design for Erection\n# RD.10 Design Responsibilities\n# RD.11 Bracing\n# RD.12 Engineering Principles\n# RD.13 Maths\n# RD.14 Girder Connections\n# RD.15 Remedial Works\n# RD.16 Lifted Roofs\n# RD.17 Fire","[{\"question\":\"What major topic areas are included in the Roof Design (RD) reference list?\",\"answer\":\"It organizes content across terminology, materials, job types, roof features, trusses/frames, key considerations, and multiple design stages such as manufacture, transport, and erection. It also includes bracing, engineering principles, maths, connections, remedial works, lifted roofs, and fire-related items.\"},{\"question\":\"Which materials and components are listed under RD.2 Materials?\",\"answer\":\"The materials section includes timber, nail plates (including corrosion-related use and gap considerations), Posi-Strut, roof finishes (tiles, flat roofs, warm roofs), hangers (types, manual design, bearing lengths), plywood, fixings, restraint straps, and an RD.2.9 Other bucket.\"},{\"question\":\"How does the document approach structural design under engineering principles and bracing?\",\"answer\":\"It separates guidance into bracing responsibilities and categories (wall bracing, stability bracing, wind girders/posts, ply/OSB bracing, and attic strutting) and engineering principles such as moment, tension/compression, vibration checking, support fixity, and deflection limits. It also outlines loading categories, durations, load paths, wind effects, snow drift, and special loads.\"}]","Roof Design (RD) - Reference List - Roof Design Terminology - Materials - Job Types - Roof Features - Trusses/Frames | PDF",13]