What is the normal measurement for how much the stair nose should stick out?
Md Ariful Islam
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Dr. Md Rushad Rahman
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1.75 cm is the ideal, 3.8 cm is the max, and they should be rounded. Outside of this range, the stair is more dangerous and uncomfortable. The "bullnose" as it is called allows for the placement of the heel or toes slightly below the next/previous stair edge, which is more natural due to the way we walk on steps.
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