# Building Codes by Topic Find calculation guides, web tools and printable references by task, alongside country-specific building-code guidance. - Canonical HTML: https://www.chippy.tools/building-codes/topics/ - Publisher: Chippy Tools - Language: en - Updated: 2026-09-09 [Building Codes](https://www.chippy.tools/building-codes/) Building Codes by Topic # Building Codes by Topic Find calculation guides, web tools and printable references by task, alongside country-specific building-code guidance. Choose your task. Calculation guides explain the maths; expand a country to find its building-code guidance. Requirements can depend on the building class, adopted edition and local amendments. [Stairs & barriers](https://www.chippy.tools/building-codes/topics/#stairs) [Timber framing](https://www.chippy.tools/building-codes/topics/#framing) [Roofing](https://www.chippy.tools/building-codes/topics/#roofing) [Footings & slabs](https://www.chippy.tools/building-codes/topics/#footings) [Waterproofing](https://www.chippy.tools/building-codes/topics/#wet-areas) [Ramps & access](https://www.chippy.tools/building-codes/topics/#ramps) [Room heights](https://www.chippy.tools/building-codes/topics/#rooms) ## Stairs & barriers Risers, goings, landings and guarding. ### Calculation guides - [Stair Rise & Run Setout: Riser, Going & the 2R+G Formula](https://www.chippy.tools/building-codes/concrete/stair-rise-and-run-setout/) [Calculate stair geometry](https://www.chippy.tools/building-codes/tools/#stairs) [Get the printable worksheet](https://www.chippy.tools/building-codes/printables/#stair-setout) ### Building-code guidance by country Australia 5 guides - [NCC Stair Requirements: Riser, Going & the 2R+G Rule Explained](https://www.chippy.tools/building-codes/au/stairs/ncc-stair-requirements/) - [Maximum & Minimum Stair Riser Heights in Australia](https://www.chippy.tools/building-codes/au/stairs/stair-riser-heights/) - [How to Calculate Stairs: Rise, Run & Number of Steps](https://www.chippy.tools/building-codes/au/stairs/how-to-calculate-stairs/) - [Balustrade Height Requirements: When Do You Need One?](https://www.chippy.tools/building-codes/au/stairs/balustrade-height-requirements/) - [Stair Winders & Landings (NCC 2025)](https://www.chippy.tools/building-codes/au/stairs/stair-winders-and-landings/) United States 2 guides - [California Guard Height: 42 Inches Under the CRC](https://www.chippy.tools/building-codes/us/ca/guard-height-42-inches/) - [IRC Stair & Guard Rules: Riser, Tread, Handrail, Guards](https://www.chippy.tools/building-codes/us/stairs/stair-and-barrier-requirements/) New Zealand 1 guide - [NZ Stair & Barrier Rules: Riser, Tread, Handrails, Barriers](https://www.chippy.tools/building-codes/nz/stairs/stair-and-barrier-requirements/) United Kingdom 2 guides - [Scotland Stair Going & Pitch: 225 mm Going, 42° Max](https://www.chippy.tools/building-codes/uk/scotland/stair-going-and-pitch/) - [UK Stair Rules (Approved Document K): Rise, Going, Guarding](https://www.chippy.tools/building-codes/uk/stairs/stair-and-barrier-requirements/) Canada 1 guide - [NBC Stair & Guard Rules: Riser, Run, Handrails, Guards](https://www.chippy.tools/building-codes/ca/stairs/stair-and-barrier-requirements/) Ireland 1 guide - [Irish Stair & Barrier Rules: Rise, Going, Handrails, Guarding](https://www.chippy.tools/building-codes/ie/stairs/stair-and-barrier-requirements/) France 1 guide - [French Stair and Guard Rules: Check the Housing Scope](https://www.chippy.tools/building-codes/fr/stairs/stair-and-barrier-requirements/) Germany 1 guide - [German Stair Rules: DIN 18065 Rise, Going & Guard Heights](https://www.chippy.tools/building-codes/de/stairs/stair-and-guard-requirements/) Spain 1 guide - [Spanish Stair & Barrier Rules: Riser, Going, Handrails, Guarding](https://www.chippy.tools/building-codes/es/stairs/stair-and-barrier-requirements/) Indonesia 1 guide - [Indonesian Stair Rules: Rise, Going, Handrail Heights](https://www.chippy.tools/building-codes/id/stairs/stair-and-handrail-requirements/) Japan 1 guide - [Japanese Stair Rules: Riser, Tread & Guard Heights](https://www.chippy.tools/building-codes/jp/stairs/stair-and-guard-requirements/) India 1 guide - [Indian Stair Rules: Riser, Going, Width & Headroom (NBC 2016)](https://www.chippy.tools/building-codes/in/stairs/stair-and-barrier-requirements/) Norway 1 guide - [Norwegian Stair & Guard Rules: Going, Headroom, Handrails (TEK17)](https://www.chippy.tools/building-codes/no/stairs/stair-and-guard-requirements/) Sweden 1 guide - [Swedish Stair Rules: No Fixed Rise or Going, Headroom, Guards and Safe Geometry](https://www.chippy.tools/building-codes/se/stairs/stair-and-guard-requirements/) ## Timber framing Spacing calculations and the inputs to check against your framing design. ### Calculation guides - [Stud & Joist Spacing Takeoff: How Many at 400, 450 & 600 mm Centres](https://www.chippy.tools/building-codes/concrete/stud-and-joist-spacing-takeoff/) ### Building-code guidance by country Australia 7 guides - [AS 1684 Span Tables Explained: Start with the Inputs](https://www.chippy.tools/building-codes/au/framing/as-1684-span-tables-explained/) - [Wind Classification: The Input Your Frame Needs](https://www.chippy.tools/building-codes/au/framing/wind-classification-australia/) - [Floor Joist Spans: What Determines the Answer](https://www.chippy.tools/building-codes/au/framing/floor-joist-spans-explained/) - [Rafter Spans and Roof Members: Geometry Is Only the Start](https://www.chippy.tools/building-codes/au/framing/rafter-spans-and-roof-members/) - [MGP10 vs MGP12: Grade Is One Part of the Specification](https://www.chippy.tools/building-codes/au/framing/mgp10-vs-mgp12/) - [Stud Spacing: Start with the Wall Design](https://www.chippy.tools/building-codes/au/framing/stud-spacing-and-wall-framing/) - [Construction Timbers in Queensland: Check the Species Requirement](https://www.chippy.tools/building-codes/au/qld/construction-timbers-queensland/) ## Roofing Pitch, roof geometry and water drainage. ### Calculation guides - [Roof Pitch to Angle: Convert Rise/Run to Degrees & Grade](https://www.chippy.tools/building-codes/concrete/roof-pitch-to-angle/) - [Rafter Length Calculation: Run, Rise & Overhang](https://www.chippy.tools/building-codes/concrete/rafter-length/) [Convert a gradient](https://www.chippy.tools/building-codes/tools/#gradient) [Get the printable worksheet](https://www.chippy.tools/building-codes/printables/#gradient-conversion) ### Building-code guidance by country Australia 3 guides - [Queensland Cyclone Tie-Downs: Which Wind Regions Count](https://www.chippy.tools/building-codes/au/qld/cyclone-tie-downs/) - [Minimum Roof Pitch (NCC 2025): Metal vs Tile](https://www.chippy.tools/building-codes/au/roofing/minimum-roof-pitch/) - [Gutters & Downpipes: NCC Sizing Basics](https://www.chippy.tools/building-codes/au/roofing/gutters-and-downpipes/) New Zealand 1 guide - [NZ Minimum Roof Pitch (E2/AS1): Tiles vs Metal](https://www.chippy.tools/building-codes/nz/roofing/minimum-roof-pitch/) United Kingdom 1 guide - [Minimum Roof Pitch in England: Choose the Roof System](https://www.chippy.tools/building-codes/uk/roofing/minimum-roof-pitch/) Ireland 1 guide - [Irish Roof Pitch: Product, Exposure and Design Checks](https://www.chippy.tools/building-codes/ie/roofing/minimum-roof-pitch/) Spain 1 guide - [Spanish Minimum Roof Pitch (CTE DB-HS1): By Material](https://www.chippy.tools/building-codes/es/roofing/minimum-roof-pitch/) Norway 1 guide - [Norway Minimum Roof Fall (TEK17 §13-12): The 1:40 Rule](https://www.chippy.tools/building-codes/no/roofing/minimum-roof-pitch/) ## Footings & slabs Site conditions, footing design and quantities. ### Calculation guides - [Concrete Calculations: The Complete On-Site Guide](https://www.chippy.tools/building-codes/concrete/concrete-calculations-guide/) - [How to Calculate Concrete Volume for a Slab](https://www.chippy.tools/building-codes/concrete/concrete-volume-slab/) - [Concrete for Post Holes: Volume Per Hole & Bags Needed](https://www.chippy.tools/building-codes/concrete/concrete-post-holes/) - [How Many Bags of Concrete Per m³? (20kg, 25kg, 40kg)](https://www.chippy.tools/building-codes/concrete/bags-of-concrete-per-m3/) - [Concrete Mix Ratios Explained: 1:2:3, 1:2:4 & Water-Cement Ratio](https://www.chippy.tools/building-codes/concrete/concrete-mix-ratios/) - [Gravel & Base Volume: Compacted Depth vs Loose-Fill Order Quantity](https://www.chippy.tools/building-codes/concrete/gravel-and-base-volume/) [Estimate concrete quantity](https://www.chippy.tools/building-codes/tools/#concrete) [Get the printable worksheet](https://www.chippy.tools/building-codes/printables/#concrete-quantities) ### Building-code guidance by country Australia 1 guide - [Footing Sizes & Site Classification (AS 2870)](https://www.chippy.tools/building-codes/au/footings/footing-sizes-site-classification/) United States 1 guide - [US Footing Sizes & Frost Depth (IRC R403)](https://www.chippy.tools/building-codes/us/footings/footing-sizes-and-depth/) New Zealand 1 guide - [NZ House Foundations & 'Good Ground' (NZS 3604)](https://www.chippy.tools/building-codes/nz/footings/footing-sizes-and-depth/) United Kingdom 1 guide - [UK Foundation Depths & Footing Widths (Doc A)](https://www.chippy.tools/building-codes/uk/footings/footing-sizes-and-depth/) Canada 1 guide - [Canada Footing Sizes (NBC 9.15)](https://www.chippy.tools/building-codes/ca/footings/footing-sizes-and-depth/) Ireland 1 guide - [Irish Strip Foundations: Widths, Depth & Concrete (TGD A)](https://www.chippy.tools/building-codes/ie/footings/footing-sizes-and-depth/) France 1 guide - [French Footings: Clay-Risk Rules and Site Design](https://www.chippy.tools/building-codes/fr/footings/footing-sizes-and-depth/) Germany 1 guide - [Does Germany Have a Fixed Foundation Depth?](https://www.chippy.tools/building-codes/de/footings/foundation-depth-and-footings/) Spain 1 guide - [Spanish Footings: Ground Study, Design and Concrete Volume](https://www.chippy.tools/building-codes/es/footings/footing-sizes-and-depth/) Indonesia 1 guide - [Indonesian Foundations: No Frost Rule, Design-Driven Depth](https://www.chippy.tools/building-codes/id/footings/footing-depth-and-concrete/) Japan 1 guide - [Japanese Foundation Rules: Depth, Concrete & Rebar Cover](https://www.chippy.tools/building-codes/jp/footings/footing-depth-and-concrete/) India 1 guide - [Indian Foundation Rules: Depth, Thickness & Concrete Grade (NBC 2016)](https://www.chippy.tools/building-codes/in/footings/footing-sizes-and-depth/) Norway 1 guide - [Norwegian Foundation Depth & Width: Why TEK17 Sets No Fixed Number](https://www.chippy.tools/building-codes/no/footings/foundation-depth-and-width/) Sweden 1 guide - [Swedish Foundation Depth & Width: Why Boverket Sets No Fixed Number](https://www.chippy.tools/building-codes/se/footings/foundation-depth-and-width/) ## Waterproofing Wet-area details and jurisdiction-specific requirements. ### Calculation guides - [How to Convert a Fall or Gradient: Ratio, Percentage & Degrees](https://www.chippy.tools/building-codes/concrete/fall-and-gradient-conversion/) [Convert a gradient](https://www.chippy.tools/building-codes/tools/#gradient) [Get the printable worksheet](https://www.chippy.tools/building-codes/printables/#gradient-conversion) ### Building-code guidance by country Australia 2 guides - [Wet Area Floor Wastes in Queensland (QDC MP 4.5)](https://www.chippy.tools/building-codes/au/qld/wet-area-floor-wastes/) - [Shower & Wet Area Waterproofing (NCC 2025)](https://www.chippy.tools/building-codes/au/wet-areas/waterproofing-requirements/) United States 1 guide - [Shower & Tub Wall Finish (IRC R307.2)](https://www.chippy.tools/building-codes/us/wet-areas/waterproofing-requirements/) New Zealand 1 guide - [Wet Area Waterproofing (NZ E3/AS1)](https://www.chippy.tools/building-codes/nz/wet-areas/waterproofing-requirements/) United Kingdom 1 guide - [Wet-Room Waterproofing in England: Part C and the Project Detail](https://www.chippy.tools/building-codes/uk/wet-areas/waterproofing-requirements/) Canada 1 guide - [Shower & Bathtub Waterproof Finish (NBC 9.29.2)](https://www.chippy.tools/building-codes/ca/wet-areas/waterproofing-requirements/) Ireland 1 guide - [Irish Wet-Room Waterproofing: System and Project Checks](https://www.chippy.tools/building-codes/ie/wet-areas/waterproofing-requirements/) France 1 guide - [French Wet-Room Waterproofing: SPEC, SEL and Product Scope](https://www.chippy.tools/building-codes/fr/wet-areas/waterproofing-requirements/) Germany 1 guide - [German Wet-Room Waterproofing: Check DIN and Land Rules](https://www.chippy.tools/building-codes/de/wet-areas/waterproofing-requirements/) Spain 1 guide - [Spanish Wet-Room Waterproofing: What CTE DB-HS1 Doesn't Cover](https://www.chippy.tools/building-codes/es/wet-areas/waterproofing-requirements/) Indonesia 1 guide - [Does Indonesia Have a Wet-Area Waterproofing Standard?](https://www.chippy.tools/building-codes/id/wet-areas/waterproofing-requirements/) Japan 1 guide - [Japan Wet-Room Waterproofing: Standards and System Details](https://www.chippy.tools/building-codes/jp/wet-areas/waterproofing-requirements/) India 1 guide - [India Wet-Area Waterproofing: Check the Project Specification](https://www.chippy.tools/building-codes/in/wet-areas/waterproofing-requirements/) Norway 1 guide - [Norwegian Wet-Room Falls and Waterproofing: TEK17 §13-15](https://www.chippy.tools/building-codes/no/wet-areas/waterproofing-requirements/) Sweden 1 guide - [Swedish Wet-Room Rules: Waterproof Layers and Floor Falls](https://www.chippy.tools/building-codes/se/wet-areas/waterproofing-requirements/) ## Ramps & access Gradients, landings and access requirements. ### Calculation guides - [How to Convert a Fall or Gradient: Ratio, Percentage & Degrees](https://www.chippy.tools/building-codes/concrete/fall-and-gradient-conversion/) [Convert a gradient](https://www.chippy.tools/building-codes/tools/#gradient) [Get the printable worksheet](https://www.chippy.tools/building-codes/printables/#gradient-conversion) ### Building-code guidance by country Australia 1 guide - [House Ramp Gradients: Choose the Right NCC Path](https://www.chippy.tools/building-codes/au/ramps/ramp-gradients/) United States 1 guide - [US Ramp Slopes (IRC R311.8)](https://www.chippy.tools/building-codes/us/ramps/ramp-gradients/) New Zealand 1 guide - [NZ Ramp Gradients (NZBC D1)](https://www.chippy.tools/building-codes/nz/ramps/ramp-gradients/) United Kingdom 1 guide - [UK Ramp Gradients (Approved Document M)](https://www.chippy.tools/building-codes/uk/ramps/ramp-gradients/) Canada 1 guide - [Canada Ramp Slopes (NBC 9.8)](https://www.chippy.tools/building-codes/ca/ramps/ramp-gradients/) Ireland 1 guide - [Irish Dwelling Ramp Gradients: TGD M Approach Rules](https://www.chippy.tools/building-codes/ie/ramps/ramp-gradients/) France 1 guide - [French Ramp Rules: Housing Access and Terrace Exceptions](https://www.chippy.tools/building-codes/fr/ramps/ramp-gradients/) Germany 1 guide - [German Ramp Gradients: DIN 18040-2 Accessible Ramp Rules](https://www.chippy.tools/building-codes/de/ramps/ramp-gradients/) Spain 1 guide - [Spanish Ramp Gradients: General Ramp vs Accessible Itinerary (CTE DB-SUA)](https://www.chippy.tools/building-codes/es/ramps/ramp-gradients/) Indonesia 1 guide - [Indonesian Ramp Gradients: Indoor, Outdoor & Landings](https://www.chippy.tools/building-codes/id/ramps/ramp-gradients-and-landings/) Japan 1 guide - [Japanese Ramp Gradients: Slope, Landings & Width](https://www.chippy.tools/building-codes/jp/ramps/ramp-gradients/) India 1 guide - [Indian Ramp Guidance: NBC 2016 Scope and Gradients](https://www.chippy.tools/building-codes/in/ramps/ramp-gradients/) Norway 1 guide - [Norwegian Ramp Gradients: TEK17 §12-16](https://www.chippy.tools/building-codes/no/ramps/ramp-gradients/) Sweden 1 guide - [Swedish Ramp Gradients: Accessible Routes and the 1:12 Limit](https://www.chippy.tools/building-codes/se/ramps/ramp-gradients/) ## Room heights Ceiling-height rules and their scope. [Get the code-check worksheet](https://www.chippy.tools/building-codes/printables/#code-check) ### Building-code guidance by country Australia 1 guide - [Minimum Ceiling Heights (NCC 2025)](https://www.chippy.tools/building-codes/au/rooms/minimum-ceiling-heights/) United States 1 guide - [US Minimum Ceiling Heights (IRC R305)](https://www.chippy.tools/building-codes/us/rooms/minimum-ceiling-heights/) New Zealand 1 guide - [NZ Ceiling Heights: Building Code and Housing Rules](https://www.chippy.tools/building-codes/nz/rooms/minimum-ceiling-heights/) United Kingdom 1 guide - [Does the UK Have a Minimum Ceiling Height?](https://www.chippy.tools/building-codes/uk/rooms/minimum-ceiling-heights/) Canada 1 guide - [Canada Minimum Ceiling Heights (NBC 9.5)](https://www.chippy.tools/building-codes/ca/rooms/minimum-ceiling-heights/) Ireland 1 guide - [Does Ireland Have a Minimum Ceiling Height?](https://www.chippy.tools/building-codes/ie/rooms/minimum-ceiling-heights/) France 1 guide - [France's Minimum Ceiling Height: the 2.20 m Décence Rule](https://www.chippy.tools/building-codes/fr/rooms/minimum-ceiling-heights/) Germany 2 guides - [Minimum Room Height by Bundesland: Germany Land by Land](https://www.chippy.tools/building-codes/de/room-heights-by-bundesland/) - [Does Germany Have a National Minimum Room Height?](https://www.chippy.tools/building-codes/de/rooms/minimum-room-heights/) Spain 1 guide - [Does Spain Have a National Minimum Room Height?](https://www.chippy.tools/building-codes/es/rooms/minimum-ceiling-heights/) Indonesia 1 guide - [Does Indonesia Have a Minimum Ceiling Height?](https://www.chippy.tools/building-codes/id/rooms/minimum-ceiling-heights/) Japan 1 guide - [Japan's Minimum Ceiling Height: 2.1 m, Fixed](https://www.chippy.tools/building-codes/jp/rooms/minimum-ceiling-heights/) India 3 guides - [Delhi Room and Stair Rules Under UBBL 2016](https://www.chippy.tools/building-codes/in/dl/ubbl-room-and-stair-rules/) - [Maharashtra Room & Stair Sizes: The UDCPR 2020 Rules](https://www.chippy.tools/building-codes/in/mh/udcpr-room-and-stair-rules/) - [Indian Room Height & Area Rules: The NBC 2016 Numbers](https://www.chippy.tools/building-codes/in/rooms/minimum-room-heights/) Norway 1 guide - [Norwegian Room Height, Light & Ventilation Rules (TEK17)](https://www.chippy.tools/building-codes/no/rooms/minimum-ceiling-heights/) Sweden 1 guide - [Swedish Room Heights: New Rules and Transitional Projects](https://www.chippy.tools/building-codes/se/rooms/minimum-ceiling-heights/) ## Page directory ## Other languages - [es](https://www.chippy.tools/es/building-codes/topics/index.md)