Gambrel Roof Plywood Gussets

With your first truss measuring out ok its time to cut and attach gusset plates.

Gambrel roof plywood gussets.

You might want to read through this thread as well gambrel roof. The gambrel spans 10 feet. As long as the joint is adequately nailed the assembly acts as a single unit and is equivalent to a continuous sawn lumber rafter. Place the osb or plywood on the top portion of the rafters and make sure that the edges run flush.

10 23 2019 9 32 56 am. Nail along the edges of the osb or plywood driving the nails into the rafters every 8 inches 20 cm with 8d common nails. Plywood gussets could then be used to reinforce the joint if necessary. For the gambrel truss we will need 6 total gusset plates made out of 1 2 material like osb or plywood.

Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. Nail osb or plywood onto the rafters to enclose the roof. Taken together the plywood pieces have the same thickness as the rafters themselves.

Start with the top corners of the roof first. The gusset system relies on a pair of 3 4 inch fir plywood gussets at each joint with the rafters sandwiched in the center. If plywood is used the rule of thumb is 3 4 to match the thickness of the sandwiched rafter. You must also use glue construction adh.

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Nail gusset plates to the truss at all 3 connection spots with 8d common nails using 10 per connection 5 per each truss end. 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. Nail on gusset plates.

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.