Buildable

Buildable puts the NZS 3604:2011 timber-framing tables in your pocket — fast, offline, and built for the job site instead of the office. Stop thumbing through the Standard on the tailgate. Punch in your numbers, get your answer, get back to work. WHAT'S INSIDE — 10 calculators • Member Sizer — size floor joists, rafters and lintels straight from the NZS 3604 span tables (7.3, 7.4, 8.2, 8.3, 9.2, 9.3) • Bracing Calculator — Section 5 bracing demand (wind + earthquake) and Table 8.1 element capacities, with a live sufficient / insufficient check as you add bracing • Wind Zone Finder — look up your site's wind zone by location • Span Tables — browse the full set of NZS 3604 tables • 3-4-5 Square — set out and check square corners • Baluster Spacing — even spacing with a ≤100 mm gap, every time • Stair Calculator — risers, going and pitch checked against D1/AS1 • Roof Pitch — convert between degrees, ratio and rafter length • Concrete — volume and bag count • Timber Treatment — pick the right H-class (NZS 3640) BUILT FOR THE SITE • Works offline — no signal needed out the back blocks • iPhone and iPad • Clean, big-button layout you can drive with gloves on • Every result shows the table it came from HONEST RESULTS Calculations are indicative and reference the NZS 3604:2011 table behind them. Always confirm with a Licensed Building Practitioner before lodging for consent. Buildable is free, supported by a small banner ad. Want it gone? Buildable Pro removes ads for a one-time purchase — no subscriptions, ever.