Gambrel Roof 32 Foot Span Structurial Design

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

Gambrel roof 32 foot span structurial design.

To calculate a gambrel roof select gambrel roof from the roof type dropdown list or click on the appropriate toolbar button to calculate a. If you have a 10 ft 3 0 m wide shed your roof will be 10 ft 3 0 m wide and 5 ft 1 5 m tall. Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. Lay a piece of 10 ft 5 ft 3 0 m 1 5 m plywood on the floor.

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. Area under roof the same gross areawas taken forboth roofs. Gambrel roof structures and wind uplift. The spans in this table are based on a maximum supported rafter span of 16 feet where the supported span is the total horizontal distance spanned by the roof rafters divided in half not the diagonal distance or the length of the rafter.

Page 21 i have a 22 foot span and a ridge height of 11 feet which requires a 2x12 rafter upsized from a 2x10 with gussets extending 18 inches onto each side of the joint nailed with 8d nails at 4 inches on. This piece of plywood represents the dimensions for your roof and will serve as an assembly site for your rafters. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Usinga combinationof14 10 and 8 foot raftersections and the standard gambrel using a combination of14and 12 foot raf tersections.

This approach conforms to my general design philosophy when in comes to the. Figure 4 givesthe dimensions for the roofs.