Gable Roof Rafter Size

If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center.

Gable roof rafter size. The calculator provides online calculate the length of rafters a gable roof. 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. Another option are 2 x 8 rafters spaced 24 inches o c. This means that for every 1m the rafter travels horizontally the angled length of the roof will be 1 1543m.

1 1543 x 1 610 1 858m. The table states that 2 x 6 rafters spaced 16 inches on center o c can span a maximum distance of 13 feet 5 inches. Gable roof a gable roof has two opposite sides with equal slopes and equal spans that meet in the center of the roof at the ridge. As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes.

Gable roof framing calculator plan diagram with full dimensions for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. Use the saltbox roof to calculate a two sided roof with different slopes spans and or overhangs for each side of the roof. Input the rafter span on the flat eave overhang and pitch of the roof. Includes result for hip valley factor slope factor and the roof slope in degrees.

After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors. The length of rafter per meter of run is 1 1543. Online calculator produces an accurate calculation of the rafters online calculates the sizes of rafters for the roof. The length of rafters length overhang the angle of the saw cut the distance to drinking.

Click the button to calculate the stock size needed for this job. This calculator is to be used as an estimating tool only. In making your choice consider how you will insulate your insulate your roof. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.