Rafter Spacing

Wider panels allow for greater spacing between rafters.

Rafter spacing. 1 ft 0 3048 m. For instance 2 grade 2x4s at 16 on center will span just over 9. 1 psf lb f ft 2 47 88 n m 2.

Live load psf dead load psf span calculator for wood joists and rafters available for the iphone. 2 are indicated below. 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.

It is always better to have a large rafter rather than be concerned with a sagging roof. Span calculator for wood joists and rafters also available for the. If your local building authority has a rafter spacing code you may not space rafters wider than required by code.

Spacing in exterior exposure. Rafter spacing is based on the width of the metal roofing panels. For standard shed roof rafter spacing see rafter span chart.

Rafter spacing rafters must be strong enough to hold the roof sheathing and the shingles. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry.

Live load is weight of furniture wind snow and more. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. There is no standard spacing it depends on what size of rafters you want to use and the span of your shed.