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Australian Standards, the National Construction Code, and common rules of thumb.

Australian Standards (commonly referenced in fit-out)

• AS 1428.1 — Design for access and mobility
• AS 1657 — Fixed platforms, walkways, stairways & ladders
• AS 1170 — Structural design actions (loads)
• AS 1288 — Glass in buildings — selection & installation
• AS 2047 — Windows & external glazed doors
• AS 3600 — Concrete structures
• AS 1684 — Residential timber-framed construction
• AS 3740 — Waterproofing of domestic wet areas
• AS 1530 — Fire tests — building materials & structures
• AS 4386 — Cabinetry — kitchen units & components

Standards are copyright to Standards Australia — buy them from the official store; this is a reference to the numbers, not the content.

Useful links

• Standards Australia store — Buy the standards themselves (they're copyright — link, don't pirate).
• NCC / BCA (ABCB) — The National Construction Code — free to read after a no-cost sign-up.
• Bureau of Meteorology — Wind regions, rainfall intensity, climate data for set-out.
• WorkSafe / SafeWork (your state) — Codes of practice, SWMS templates, height & silica guidance.

Rules of thumb

• Common stock lengths: Timber/trim 5.4 / 4.8 / 3.6 / 2.4 m · SHS/RHS 6.5 / 8 m · plasterboard sheet 1200 × 2400/2700/3000 mm
• Paint coverage: ≈ 10–12 m²/L per coat on a sealed surface (always check the data sheet).
• Concrete bag yield: 20 kg pre-mix ≈ 0.0108 m³; ~92 bags per m³.
• Tile wastage: Allow 10% standard, 15% for diagonal/large-format or patterned lays.
• Stair comfort (AS 1657): Riser 115–190 mm · going 240–355 mm · 2R + G ≈ 550–700 mm.

The tools

• Cut List Optimizer · Materials · Geometry & Setout · Converter · Rate builder · Sketchpad · Voice notes

Estimates and references only — verify against the current standard. ← all tools