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Deck Joist Bending Calculations
Hello. I not an ME (I'm EE) but tried my hand at calculating some loads for a 4-season room on a deck I'm building. Just wanted to run it by some peers to see if it looks sound. I'm going to a structural guy in a couple weeks to have formal plans done but wanted to understand this for myself first.
Pretty simple setup. The deck comes out 14' from the house. It's 12' to the beam with a 2' overhang. The 4-season room will be 14x16 (16' along the house). The roof would be a simple slant type (attached to house, then sitting on a wall at 14' out). I know this puts considerable load on the overhang, and wanted to compute the bending force on the joist it's sitting on (there are 12 joists this room would sit on). The Fb for the 2x10's I'm using is 1050 psi. I used 50 psf for load in the room, and also 50 psf on the roof. In the end, I got that each joist would see a bending force of 598 psi, well within limits.
Thanks for the help. Picture attached.