Flat Porch Roof 2x6 Rafters

Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.

Flat porch roof 2x6 rafters.

Dead load weight of structure and fixed loads 15 lbs ft 2. For roofs that won t experience heavy snow loads a gable roof can span up to 22 with 2 4 rafters. 2 are indicated below. If you have.

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 will be setting 4x4 post every 6 with 2 2x6 s with 1 2 osb sandwiched between them as the form to set on top of post. 1 ft 0 3048 m. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.

1 psf lb f ft 2 47 88 n m 2. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. For roofs that will experience heavy snow or wind and will span the same distance use 2 6 rafters. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.

My plan is to add 2x6 supports on to the top plates of the existing house wall where the 2x6 s intersect with the walls. If i tie into a 6 12 pitch roof with 2x6 s. Live load is weight of furniture wind snow and more. We show you the steps involved and calculations required for buildng a roof for your porch or constructing one over your deck or patio.

Building a porch roof requires basic carpentry and porch roof framing knowledge. It is always better to have a large rafter rather than be concerned with a sagging roof. This allows the panels to be securely attached to the rafters for maximum stability. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

Structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. We show you how both a typical rafter style porch and truss roof area constructed. You can use either 2 6 or 2 4 rafters for roofs with a 3 12 pitch or greater but it depends on the overall size of your shed. Will i be able to span a concrete slab of 11 6.