Have A 2x4 Running Perpendicular To Garage Roof Rafters

It is possible the roof is supported by a structural beam instead of mere ridge board then you may not need the rafter ties.

Have a 2x4 running perpendicular to garage roof rafters.

Hey guys i have a 16x24 shop ive built that needs a roof but im running low on cash i m wondering if 2x4 rafters with a 2x6 beam will be strong enough to hold a roof with 4 12 pitch asphalt shingles 7 16 osb and felt paper. Would sistering 2x4 s in one 12 and two 8 sections all glued and screwed be enough to make it safe for storage. I don t see this in what you posted. The 2x4 perpindicular to the rafters is there to space the rafters or trusses apart prior to the roof being sheeting being installed.

I can see a break in the truss under one of the joint plates. When you have ceiling joists running perpendicular to the rafters you typically need rafter ties often installed 4 feet on center. It is unnecessary at this point for the same reason you can t move the mis spaced truss to where it should be. It has an a frame roof.

The span is 28. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. I did some calculations lastnight and came up with 4 6 lbs psf. I am adding 3 4 plywood as the floor but also elevating the floor with 2x4 laid on their sides going perpendicular to the trusses.

I suppose i could add more but with the span across the garage they would have to be tied in to the rafters like the existing ones are which ultimately adds the load to the rafters still. For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are. He also put a few braces from the joist to the rafters to keep the rafters from swaying.