![]() We will start by determining the load on the beam, in pounds per linear foot (plf). This article covers the more cumbersome `hand calculations’ that we will need instead. That Calculator, however, does not handle continuously spanning beams. The original design using the 8-ft simple spanning beams was `easy’ we used a `Wood Beam Capacity Calculator’ that we found on line. The advantage to using two longer beams (instead of four) will be better framing `continuity’ and reduced beam deflection (sag). These two 16-ft beams will span 8 ft, 7 ft, and then over the outer supports to overhang 1 ft. In this article we examine the use of the same 2 x 12s, except that instead of four 8-ft beams, we will use two 16-ft beams. In that design we came up with four 3-ply 2 x 12 Douglas Fir – Larch (DF) beams, each 8 feet (ft) long the inner beams spanning 8 ft `simply’, and the outer beams 7 ft with 1 ft overhangs. In a previous article we tackled the design of the framing elements (decking, joists, support beams, and posts) for a 12′ x 32′ exterior deck for a mountain cabin. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
March 2023
Categories |