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dodic1

12:19PM | 11/01/05
Member Since: 10/31/05
3 lifetime posts
Bvmisc
We are rebuilding our front stairs, which requires a permit. The permit people, being so helpful, told me I needed to hire an engineer to draw my plans. So that the calculations proving the wood framing will hold the concrete are there. (the previous set of stairs lasted 50 years and we are using wood twice as thick) The stairs are 4' wide, each stair has a rise of 7" and a run of 10". The treads (2 X 11 X 48) are attached to the stringers (no risers - the extra inch for the concrete) The stringers (4 of them) are 2 X 12 X 100 before the cutouts were done. They are attached to 2 X 4 existing beams set 12 incehes apart down the stairs and 13 inches apart under the porch. I know how much the concrete (1" thick) weighs, I need to know the weight capacity of the wood. I'm good at math so if there is a formula I can run with that.
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