Roof Strut Spacing

The same concept holds true for roof trusses.

Roof strut spacing.

They are birdsmouthed or halved to fit underpurlins as shown below. Follow this guide to ensure the spacing and stability of your diy roof trusses. To determine how many trusses to create you will first need to measure both the width and the length of the structure you are building. Struts should be adequately supported over studs in timber walls.

These standards are as follows. Struts must be either vertical perpendicular to the rafters or at an angle to the vertical which does not exceed 35 o. So the space between rafters can be greater without reducing the maximum span. Typical roof truss spacing means that they are usually about 24 inches from centre which means at the centre of one truss there will be a two foot gap or twenty four inch gap until the centre of the next truss.

Struts are generally more efficient the closer they are to the vertical.