Gambrel Roof Plywood Gussets

Nail osb or plywood onto the rafters to enclose the roof.

Gambrel roof plywood gussets.

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. Nail along the edges of the osb or plywood driving the nails into the rafters every 8 inches 20 cm with 8d common nails. Nailed plywood gusset roof trusses author. Start with the top corners of the roof first.

You must also use glue construction adh. If plywood is used the rule of thumb is 3 4 to match the thickness of the sandwiched rafter. Place the osb or plywood on the top portion of the rafters and make sure that the edges run flush. Keep in mind that i used a ridge beam not a ridge board which substantially reduces the load and outward thrust issue.

Raised custom gambrel only the raised joint supports the upper rafters on walls with the lower rafters butted against wall studs. Nail gusset plates to the truss at all 3 connection spots with 8d common nails using 10 per connection 5 per each truss end. Plywood gussets could then be used to reinforce the joint if necessary. 10 23 2019 9 32 56 am.

The gusset system relies on a pair of 3 4 inch fir plywood gussets at each joint with the rafters sandwiched in the center. Used a gambrel roof using plywood gussets used 3 4 so the two sides match the rafter thickness and did not cut them full triangles. Taken together the plywood pieces have the same thickness as the rafters themselves. Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon.

You might want to read through this thread as well gambrel roof. Nail on gusset plates. With your first truss measuring out ok its time to cut and attach gusset plates. The gambrel spans 10 feet.

For the gambrel truss we will need 6 total gusset plates made out of 1 2 material like osb or plywood. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape.