"DonkeyHody" wrote in message:
| On Oct 9, 10:48 pm, DonkeyHody wrote:
| > On Oct 9, 7:23 pm, "woodstuff" wrote:
| > > Okay, so I missed this class in Geometry... the gambrel, barn, dutch,
| > > mansard-type roof (or whatever it is called)
| > > Next month I plan to build a 20 x 20 shed for my trailers with a 6'
| > > the ridge (from the plane of the top plates). I want the upper and
| > > sections to be the same.
| > > I googled around and could not find the angles. Help will be
| > > woodstuff
| > Constrained by the parameters you gave, and assuming the flattest
| > portion of the roof needs at least 3 on 12 pitch for adequate runoff:
| > The bottom section would have a pitch of 13 1/4" rise per foot of run
| > (48 degrees from horizontal) and the top section would have 3" of rise
| > per foot of run (14 degrees from horizontal. Each rafter would be
| > slightly over 6 feet in length (exclusive of tail).
| > However, these dimensions will yeild a very squatty gambrel roof. If
| > you can raise the center to 8 feet or so, the proportions would be
| > more traditional and make the loft more useable too. In that case,
| > I'd make the bottom section 60 degrees from horizontal and the top
| > section 14 degrees from horizontal. Rafter lengths would go to 6.5
| > and 7.5 feet respectively (exlusive of tail).
| > DonkeyHody
| > "In theory, theory and practice are the same, but in practice, they
| > are not."
| I should have said the rafter lengths would go to 6.5 feet on the top
| section and 7.5 feet on the bottom section.
thanks for the work! I may well go this way and lower the sidewalls to 7'..
I am buying an enclosed trailer for my work that is 7'11" high and 8'6" wide
(outside of the wheels). The other trailer is just as wide at the wheels,
buy is a low utility trailer. Maybe it wouldn't be so bad to just build a
mezzanine on top for some type of storage, rather than wasting the space.
Just now I can't think of anything to put up that high....