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Stairs, Ramps & Rails

Stair geometry, ramps, balusters.

Stair CalculatorRisers, treads, stringer length and code checks Wheelchair Ramp CalculatorRamp length, landings and slope check Baluster Spacing CalculatorEven spacing under the 4" or 100 mm rule

Guides for this trade

Stairs, Ramps & Rails

Stair building rules: the IRC basics

Riser, tread, headroom, width and guard rules for residential stairs under the IRC, and how to lay out a compliant flight.