stair math
Posts tagged #stair math
2 articles tagged with “stair math”.
Guides8 min read
How to Calculate Stair Stringer Length: Formula and Worked Examples
Stair stringer length comes from one formula: the square root of total rise squared plus total run squared. This guide walks through the math with two worked examples and the mistakes that cost builders new lumber.
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Guides7 min read
How Many Steps Do I Need for an 8-Foot Ceiling? Riser Math Made Simple
An 8-foot ceiling usually means 14 or 15 stair risers once floor framing is counted. Here is the exact riser math: total rise, tread count, total run, and a stringer length lookup table.
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