How To Cut Roof Trusses

When a truss becomes damaged cut or modified there is a chance of a structural overload or that they will not perform properly.

How to cut roof trusses.

Adjust the mitre saw for the cut. These trusses are usually engineered by a structural engineering company to carry a specific roof load. Builders often prefer roof trusses to traditional stick framed roofs because they re quick to install. Cut a 45 degree angle at each end for a 12 12 roof a roof that rises 12 inches vertically for every 12 inches horizontally to create a really spacious attic.

Start by cutting. In this video you will learn all about common rafters. Next set the framing square on top of the rafter beam and use a pencil to trace the outside edge of the framing square s tongue. They also eliminate the need to figure and cut complicated roof angles.

Cut the ends to the angle indicated on the blueprint. Translate the pitch to an angle by using a carpenter square. Once you ve marked the lines use your pencil to draw the diagonal length on the rafter. In regards to cutting trusses an excerpt from the nds national design specification for lumber is quoted in the hansen pole buildings construction manual.

To cut roof rafters start by fixing the stair gauges on your framing square to the dimensions of your pitch. Find the pitch of your roof as labeled on your blueprint. A roof truss is a. As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss.

Lay the square on a table with the long blade. This is the steepest commonly built roof. How to cut roof trusses at angles step 1. Every elevation that shows the roof should be labeled.

Cutting and altering of trusses is not permitted. If a lot of trusses are damaged or one has been significantly modified or cut then consulting a engineer is wise.