Calculating stair height and depth follows two simple rules: tread plus riser should be between 17 and 17.5 inches, or tread times riser should be between 70 and 75. Measure heights and depths for comfortable stairs withinstruction from an experienced builder in this free video on carpentry. Expert: Robert Markey Bio: Robert Markey is an artist who works in several media including painting, sculpture, installation, video and mosaics. Filmmaker: EquilibrioFilms
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