![]() ![]() There's a 6 foot easement on that side to the fence, so the building wall will be reasonably close to the fence. OTOH, the north side where it will actually go did have the advantage that it could be closer to the "effective" line because the actual property line is about 7 feet into the neighboring property because of what had to be done when subdividing it years ago. It would be "logistically" and visually a lot better if it was on the south side rather than the north side but because of the required 15' side setback, a very large and mature willow tree would have to be destroyed. SWMBO is to not have the structure require removing any live trees. Positioning my own building has been an exercise because a "prime directive" for both myself and Professor Dr. Every property has its upsides and downsides. I'm sure that what you put up will meet the immediate need and you've mentioned that you do have a plan to move on in a few years to larger quarters. ![]() No way that would pass code now, but it's been there for 100 years and is still pretty straight. The funny thing i that the house is also 16 feet wide and has rough cut 2x4 rafters on 16" centers and a 12/12 pitch. Chapter 8 also provides requirements for the application of ceiling finishes, the proper ventilation of concealed spaces in roofs (for example, enclosed attics and rafter spaces), unvented attic assemblies and attic access. If anyone knows of a rafter span table that goes up as high as 90# I would be very grateful to hear of it. Allowable span tables are provided to simplify the selection of rafter and ceiling joist size for wood roof framing and cold-formed steel framing. It seems to me on a back of the envelope basis that full size 2x10 should be about right, but I am not an engineer. I think there is some extra strength in the full size rafters, too. It looks on the 70# chart like that would be okay, but I would need to go bigger for 90# presumably. They will be at 6/12 pitch, 24" centers and the span will be 8'9". The first span tab is for roofs where which. Rafters with ceiling not append into rafters, sanding snow load 50 psf, died load 20 psf, flexion limit L/180. I had specified full size rough cut 2x8 rafters on 24" centers. The span tables with this folio cover the following two project scenarios: Rafters with ceilings not attached to rafters, live load 20 psf, dead load 20 psf, deflection limit L/180. Technically it would be theoretically sound to use deck joist span tables from the IRCs R507 to get rafters sized for 40 psf live load, but youre not going to get a building official to join you for that adventure. I would be happy to use whatever size rafters she told me to, but since neither of us knows what is sufficient I seem to be stuck unless I hire a structural engineer, which I would rather avoid if possible. If youre not doing something goofy up there (like a deck), then you dont need 40 psf tables. The inspector also doesn't seem to know what size rafters are wanted. I can find rafter span charts for up to 70 psf, but nothing higher. The building inspector says that the roof must be designed for a 90 pound snow load. I have run into an obstacle in getting my workshop design approved.
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