The standard two foot framing square also referred to as a carpenter s square and historically as a steel square is an l shaped tool that is used to mark angles for cuts used in building framing particularly roof rafters stair stringers and many other cuts or angles other than 90.
Roof pitch framing square.
Square guides are available at most hardware and home improvement centers.
Aug 20 2020 explore john barber s board framing square on pinterest.
Find the unit rise say inches per foot of the roof on the top line in the framing square rafter table e g.
I go over a.
Framing square basics how to use one.
So if the pitch of your roof is 7 12 place one stair gauge on the vertical part of the framing square the tongue at the 7 inches 18 cm mark and place one stair gauge on the horizontal part of the framing square the body at the 12 inches 30 cm mark.
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.
More project and tips.
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.
Read this number along the inches scale at the top of the framing square.
See more ideas about framing construction roof framing roof design.
The triangle shaped square was invented in 1925 by albert swanson to provide a quick accurate method for marking rafters.
A 6 inch rise per foot.
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.
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.