Roof Pitch Framing Square

The triangle shaped square was invented in 1925 by albert swanson to provide a quick accurate method for marking rafters.

Roof pitch framing square.

Framing square basics how to use one. Directly below the 6 inch mark on the framing square read the required rafter length 13 42 per foot of run for a 6 inch rise 6 in 12 roof. I go over a. Because of its compact size it is frequently used as a saw guide when cutting framing members as well as a layout tool for quick 45 and 90 degree cuts.

Finding the pitch of a roof is simple with a speed square. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. If your roof is flat or has no more than a 3 in 12 pitch you can calculate its total square footage by simply multiplying the length by the width. Square guides are available at most hardware and home improvement centers.

A 6 inch rise per foot. Find the unit rise say inches per foot of the roof on the top line in the framing square rafter table e g. See more ideas about framing construction roof framing roof design. Aug 20 2020 explore john barber s board framing square on pinterest.

Read this number along the inches scale at the top of the framing square. More project and tips. Framing square guides are small inexpensive metal attachments to the framing square that are locked in position on the square s edges at the pitch and run dimensions to define the roof angle and make the repeated marking of the rafters much more efficient.