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What math formulas do you need to know in building stairs?

Answers:

From: Matt Mooney

a= height of finished floor to finished floor
a/7.5=b rounded to the neares whole # (&#of risers)
a/b=height of each riser

there are one less tred than riser.

set marks on a 24x36 square and trace to stringer

cut 1st stringer and use to trace the remaning stringers.

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