I will say that the best carpenters I have had work for me were always from the north…typically around the New England area… those guys were pretty sharp. When I hired people for framing one of the main criteria as to determining what they knew was simply taking a framing square and ask them to explain everything on it to me…the majority of the time they said they never noticed all the data that was on a framing square…if they got past that I would have them calculate the rise and run for steps…if they could do all that then I started them off at $20.00 per hour…however more often than not I ended up taking the younger guys who did not have bad habits and train them…it was a whole lot less headaches for me. I also carry a Framer’s Bible in the truck… great little book. I just like to do it like the engineer wants and then tell him he _ucked up. Plus we are not Code inforcers or engineers right.? One would be surprised how much load a framing member or roof member can carry before failure. This is way beyond the duties per the SOP anyways, but always fun talking about it. and 10 is used or 20.Ĭonsidering the safety factor on dead loads and live loads, framing would have to be very deficient structurally before I make note or recommend an SE which I never do anyways. The dead weight or dead load on the average of a standard roof is about 6.3 lb.'s. Slopes Less Than 4:12, Lightweight Roofingĭead Load = 10 psf, Live Load = 20 psf (Residential)ĭouglas Fir - Larch Framing, Deflection of L/240 maximum.Īllowable Spans for Douglas Fir Roof Rafters Size of Just pulled one out for chits and giggles and it is different than the IRC. Span charts off the Internet are all different and to many variables to deal with.
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