Gable Roof Framing Calculator

The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r.

Gable roof framing calculator.

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Online gable roof calculator kalk pro. Roof framing rafter layout. User friendly interface detailed calculation and drawings interactive 3d view roofing materials layout plans.

Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries. Calculate your ideal roof right now it s free. Our roof calculator uses base length and base width to find the estimated area. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.

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. From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it measure down y height from the long point of the rafter cut and make a mark. Includes result for hip valley factor slope factor and the roof slope in degrees. The base width is the distance from one corner of your roof to the other at its base on the short side of your house.

Rafter templates birdsmouth hap etc. Gambrel roof framing geometry calculator metric this gambrel roof confines to a semicircle and starts as the top half of an equal sided octagon. To calculate a gable roof select gable from the roof type dropdown list or click on the corresponding button on the toolbar to calculate a gable roof. Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results.

Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. This will the first point of the rafter measurement line using the results of your rafter length calculation measure from this point along the rafter measurement.

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. The base length is simply the distance from the second corner to the third corner on the house s long side.