SECTION 3 - TESDA

15. Step Refers to a stair, which consists of one tread and one riser. 16. Stud Is the structural member of a building where the siding or partition board is nailed. 17. Staircase Refers to the whole set of a stair. 18. Stringer Refers to the inclined plane that supports or holds the tread and the risers of a stair. 19. Unit of ................
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