Roof Hip Spans

For example you can span a 1 grade no knots southern yellow pine a greater distance than a 2 grade with knots southern yellow pine.

Roof hip spans.

1 psf lb f ft 2 47 88 n m 2. So this table could accommodate a house with a total rafter span or house width of 32 feet. Select the following information by using the drop downs to enter values in feet and inches. 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.

Wood beam calculator american wood council website rafter and joist span faq. They must must be on the same level. Live load is weight of furniture wind snow and more. 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.

Hip girder truss a pitch truss with a truncated or flat apex so that it can support more load. Span calculator for wood joists and rafters also available for the android os. 1 ft 0 3048 m. 2 are indicated below.

Dead load weight of structure and fixed loads 15 lbs ft 2. Also available for the android os. 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. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below.

The hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters. The lengths and sizes of joists vary depending on the species and quality of the lumber used. Span for the main rafters measure from outside of wall to outside of wall. Spacing should be interpreted as the centre to centre distance between adjacent parallel members.

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. The 1 grade. Hip roofs are more stable than gable roofs and more resistant to strong winds and hurricane.