While making roofing for your house with the roof rafters it is important to know the rafter length to make the roof seat perfectly on the rafter.
Hip roof rafter length.
Given here are the formulae to calculate the length of a shed roof rafter to make your roofings stronger and look beautiful.
For many people being able to get the right kind of hip roof calculator is very important as knowing how to measure a hip roof is going to be vital to making sure that it turns out well.
Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.
Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same.
Divide the run of the roof by the cosine of the angle of the roof to obtain the length of a common rafter.
The run of the roof in this example is 12 5 feet and the angle of the roof is 23 degrees so the length of a common rafter is 12 5 cosine 23 degrees 13 6 feet.
Select the following information by using the drop downs to enter values in feet and inches.
If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length.
Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries.
Height of the scaffold.
The drawings are representative of all of the hip end side jack rafters and do not include the overall lengths which are available on the layout tab.
The run of the rafter.
The rise of the rafter.
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.
Enter the value for the roof width outside to outside in feet inches and fraction inches and fraction or use the inches box to enter a value in decimals if that is your preference.
The span of the roof is 25 feet so the run of the roof is 25 2 12 5 feet.
The length of the rafter.
Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results.
The hip end jacks tab displays a dimensioned side view and top view of the hip roof jack rafters for the hip end side of the hip rafter on an irregular hip roof.
