Published at Thursday, June 14th 2018, 04:47:17 AM by Amelie Herbig. Stair
Take for example the new NADRA (North American Deck and Railing Association) study that examined the number of injuries caused by outdoor deck stairs and porches from 2003 to 2007. The report confirms that deck and stair injuries are on the increase. NADRA points to a 2003 study showing a total of 37,760 injuries which required a visit to the hospital. Of these injuries, 6,120 were a result of structural failure or collapse. Further, the report shows that by 2007, the incidents of serious injury had risen to 55,160. Quoting from the report- "Nearly 15% of all injuries are a result of structural failure". Wood decks are constantly exposed to the elements and they have a limited life span of 10-15 years. As you can see, important to have your deck and deck stairs inspected so that signs of wood decay and deterioration can be repaired.
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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