Gambrel Roof Gussets Weight Load

Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area.

Gambrel roof gussets weight load.

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. The standard gambrel using a combination of14and 12 foot raf tersections. If you plan on building and installing your own gambrel roof you ll have to draw out plans first to determine the proper dimensions. Figure 4 givesthe dimensions for the roofs.

Bothwere roof shapes stable underallcustomary dead loads for34 foot bams. The gross areaof the three raftergpnbrelwas taken. Hardware is required at only three points as opposed to nine different joints in the roof assembly of a traditionally framed gambrel making the system considerably easier to build. Area under roof the same gross areawas taken forboth roofs.

Gambrel roofs are symmetrical with two slopes on each side of the roof. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. The gussets top in the gambrel system above designed by the author create a three hinged arch out of each frame which simplifies the load analysis significantly. With that said when designing gambrel roof it s very important to consider wind load and other load factors because of the odd angled shape and not having ceiling collar ties you have increased chance for rafter movement under wl ll and dl so the gussets must be sized correctly if not your roof.

A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof. If plywood is used the rule of thumb is 3 4 to match the thickness of the sandwiched rafter.