# 7 12 Roof Pitch Rafter Length

**Lor (length of rafter) per foot = 13.89.**

**7 12 roof pitch rafter length**.
48 / 13.89 = 3.4557’ convert feet to inches by subtracting the integer portion (3) and multiplying by 12.
Calculate the slope of the roof.

With a ridge length of 7.044 m, the number of intermediate rafters will be: To find the total length of a common rafter, consider the run to be the horizontal distance covered by the whole rafter, from the end of the rafter tail (the part of the rafter which extends past the outside of the wall) to the near side of the ridge board.

Rafter is a sloping beam (usually wood) that supports a pitched roof. Our rafter stock size calculator shows you how long your rafters should be, so you’ll know what you need in terms of framing lumber, dimensional lumber, studs and more.

Calculating rafter length using the roof pitch chart. The roof pitch factor is also used to calculate the length of common rafters.

Drop down menus have m for metric versions. Rise and run means that a 6/12 pitch roof has 6 of rise (vertical) for each foot of run (horizontal).

Input the rafter span (on the flat), eave overhang and pitch of the roof. If you know what 44' 6 ¾ is in decimal, you can add this in the building width ft field 44' 6 ¾ in decimal format = 44.5625 otherwise, enter the 44 feet in the ft field 6 inches in the in field

For this example, let’s assume your roof covers an area that is 20 feet wide and 40 feet long. Measure the area covered by the roof.

The bolts shown are not typically the way a conventional residential roof would be framed. Just enter the dimensions of the roof (rise and run) to get started.

Pitch = rise / run = 1.5 / 6 = 25%. Allow for ridge thickness when determining rafter run to outer wall.