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The flat ceiling actually has 3/12 trusses over it like this: I'm thinking of a way to brace the 4 roof trusses of the addition together, as well as with the beam, mainly the compression edge. I went to the site today to see how everything is built now that walls and ceiling are being...

Jayrod, Thanks for your advices, I will analyze this wind beam/post design requirement carefully with a colleague of mine. As for the beam, I looked at my spreadsheet and it actually called for a triple (not double) 18" LVL beam, which yields a live load deflection of L/716 (0.388"). The snow...

Hi jayrod12, The roof beams in the picture are existing triple 2x10's and are only supporting 12' of the building's roof, with the rest of the house being trusses. Even so, the beam would be a double 18" x 1-3/4" LVL, so pretty substantial in fact due to heavy snow loads around here. As for...

Hi JLNJ, I am indeed modifying a shear wall, although I meet all the code requirements in this part of the country (Quebec city, Canada), considering that: My building is 1 story, 30'x28', and not supporting a top floor My location's seismic spectral response acceleration Sa(0.2) is not more...

Hi everyone, I need to open a gable end wall with an existing vaulted ceiling to include an existing addition within the open floor space (it is currently separated with the old house exterior wall). I have already sized the beam that will be required to support the roof beams. That new beam...

You have a very good point...fasteners through sheathing and rafters beneath it would now have to be analyzed, as well as lateral bracing of those same rafters. It's just that I've seen so many overframe (or california or blind valley whatever the name is in your part of the country) that are...

Any opinion on whether or not the continuous sheathing of the roof and the valley boards are keeping outward thrust from the rafters in check?

Hi, I'm currently looking to have an addition built to our current house in the same way as the OP. I've been scrolling through multiple thread, but this one caught my attention due to the "ridge beam" idea. A ridge beam in a traditional gable roof framing allow the removal of ceiling joists...