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.

The preview window displays a dimensioned side view of the gable roof. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Gambrel roof framing geometry calculator metric this gambrel roof confines to a semicircle and starts as the top half of an equal sided octagon.

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. Hip roof framing hip to common to ridge join diagram ply sheathing angle and cut set back both sheet orientations sheathing hip cut calculator hip roof ply cut angle diagram 1138 93 ft 35 6 sheets 5 10 15 waste 40 sheets. Our roof calculator uses base length and base width to find the estimated area.

User friendly interface detailed calculation and drawings interactive 3d view roofing materials layout plans. 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. Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length.

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. 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. 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. Online gable roof calculator kalk pro.

Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries. Roof framing rafter layout. The base length is simply the distance from the second corner to the third corner on the house s long side. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth.

Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same. Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results.