Roof Truss Spacing Standard

The typical standard for the spacing on the roof trusses is 24 inches.

Roof truss spacing standard.

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. There is a misconception that spacing trusses every 16 on center is better because it will be strong than the average 2. As most building these days are using those pre made trusses on the roof 24 inches become the main size for any roofing construction when it comes to its truss installation. This is most likely the standard size that you will find on pre made roof trusses.

Although the standard spacing of roof trusses may be the same as that of rafters with 24 inch spacing being a common option the design of a truss may allow for the use of a lower grade of lumber than would be required for rafters with comparable spacing and span. These standards are as follows. 2x4f 2000psif 1100psie 1 8x10 2x6f 1750 psi f 950 psi f 1900 psi e 1 8x10. After the braces are in place you will mark the distance from the edge of the building to where you would like to attach your first truss.

Spacing a live load deflection limited to l 240 maximum and use lumber properties as follows. Metal roofs and pole buildings. Almost all residential trusses use this spacing. Spaced sheathing or 1x boards may be reduced slightly.

While this can be true it is not always accurate unless in some high stress situations.