How Far Apart Should Roof Rafters Be Spaced

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How far apart should roof rafters be spaced. But they do tend to space rafters in one of several industry standard increments typically either 12 16 or 24 inches apart. 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. A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel. Span length for 2 6 rafters.

This post may contain affiliate links. While a 2 6 might be nearly double the cost of a 2 4 you can likely space the 2x6s further apart negating the added expense of increasing your lumber width. Wider panels allow for greater spacing between rafters. For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2.

An syp 2 6 rafter at 24 o c. To determine how far apart to set rafters measure the width of the metal panel and then the width of the first hill and valley of the panel. These spacing intervals are measured on center meaning that the measurement is taken from the center of one rafter s horizontal surface to the center of the next rafter. Use these two tables for.

If you look at our rafter spacing chart you ll notice that 2x4s can span an 8 gap on a 4 12 roof. With this set of specs we are looking at a rafter length of 5 3. Patio roof maximum beam rafter spans.