Plastic composite deck boards and stair treads, Plastic composite deck boards, stair treads, guards, and handrails shall exhibit a flame spread index not exceeding 200 when tested in accordance with ASTM E84 or UL 723 with the test specimen remaining in place during the test.
Building Basic Deck Stairs With Composite Treads And Risers : In This Article: Supporting structure is added to the deck frame, stair stringers are laid out to visualize the project, holes are dug for handrail posts, stair stringers are attached, then riser and tread surfaces are installed.
For the purpose of figuring out how far a stair jack will project from the deck, add together the depths of all the treads. For example, if a stair has four treads with a tread depth of 10 inches, the bottom face of the stair jacks will be 40 inches out from the deck.
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