Only to an extent will it work. Snow loading can be a big deal here in
Utah. If the roof slope is steep enough you can take load reductions.
But as a rule of thumb, this won't eliminate the problem. At best it
will only lessen it. If you raise the old roof above your new one, you
won't have any problems. See the appendix to chapter 16 in the back of
the UBC for general guidelines. If you are unfamiliar with snow
loading, make sure you talk with someone (read building official) who is
familiar with the area and snow provisions. Where are you planning on
Jake Watson, E.I.T.
Salt Lake City, UT
One last though, the drifting on the existing building won't have to be
considered if they are far enough apart. I don't have the provisions if
front of me, so look at the appendix.
Pat Ebner wrote:
> A project manager just came in and asked if I had ever heard of basically building a sloped roof on a lower building to eliminate the snow drift load. He has a building which is to be built next to a shorter existing building, which was not designed for a snow drift load. I have not heard of anything like this. Has anyone done this or knows if this would work?