Speed Square Roof Angles

This video is very basic and for beginners.

Speed square roof angles.

For example for a 7 12 roof pitch. As a protractor for easily finding and marking various common angles especially roof rafter pitches and angles for stair stringers the vertical supports on a stairway. Holding the level and speed square level locate the measurement on the speed square where it meets the bottom edge of the rafter to. In this video i show how to find angles using a speed square.

A speed square and level can be used to easily find the pitch of a roof. What is a speed square. Finding angles with a speed square whether you want to make a nice pitched roof on your kids treehouse or you need a utility ramp for your shed entrance getting the right angle on every side. Photo 2 shows how to use the speed square to mark a 33 1 2 degree angle the same as you would need on a rafter tail for a roof with an 8 12 pitch.

A quick way to check the angles is by using a speed square. Swanson was a carpenter in a small town outside of chicago. Locate the desired angle on the hypotenuse side of the square. The speed square was invented in 1925 by albert swanson.

Made from plastic aluminum or steel this multi measuring tool combines a protractor a try square a ruler a. The triangle shaped square was invented in 1925 by albert swanson to provide a quick accurate method for marking rafters. Lay the lipped fence flat on the shoe and take note if it s not even with the speed square. The angle of a saw blade will get out of whack slightly over time and through use.

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. Check out some tips on working with a circular saw. The rafter square or speed square does more than mark perpendicular lines. Finding the pitch of a roof is simple with a speed square.