Published at Sunday, June 17th 2018, 06:55:19 AM by Kathrin Wolf. Stair
Other codes address "rail post support" safety. A rail post per code regulations is required to support a lateral load of 200 lbs. This is a poorly enforced area of the code and with many inspectors content with the bump test. If it doesn’t move too much when they bump it with their hip, the rail will pass inspection. Many rail posts are simply lagged or nailed to the rim joists and post which are mounted directly to the deck surface will simply not meet code. The tragedy is, there are systems available on the market that correctly address this problem. Simpson, USP and Deck-Loc have brackets which will meet code for rim joist attachment but there’s only one adjustable bracket system (discussed below) which will meet code for wood or composite stairs.
How is this possible with only two stringers? The adjustable brackets are ICC/ES tested and approved as joist hangers. The risers are made structural (2x8’s), attaching to the brackets and spanning across the stair like load bearing joists. This structurally superior system has been tested with breaking strains in excess of 1,200 lbs. per sq. ft. Once the risers and treads are attached, your stair is complete. The result will be a stair that is accurate, extremely strong and "you built that stair".
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