Concrete filled pan treads connect to a structural stringer channel using typical pan-to-stringer connections and supporting metal angle brackets. The tread design includes a minimum eleven inch run dimension sized per stair plan, a seven inch maximum riser height, and a twelve inch diagonal dimension. The nosing detail shows a one eighth inch radius curve and specific tread overhang dimensions.
METAL ANGLE BRACKET SEE STAIR PLAN 11" MIN 1" 7" MAX STRINGER CHANNEL PAN TO STRINGER TYP CONCRETE FILLED PAN TREAD, SSD 12" 8.36° R 1/8" 1"
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