Roof Truss Spacing Standard

Spacing a live load deflection limited to l 240 maximum and use lumber properties as follows.

Roof truss spacing standard.

There is a misconception that spacing trusses every 16 on center is better because it will be strong than the average 2. Metal roofs and pole buildings. These standards are as follows. 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.

2x4f 2000psif 1100psie 1 8x10 2x6f 1750 psi f 950 psi f 1900 psi e 1 8x10. Spaced sheathing or 1x boards may be reduced slightly. This is most likely the standard size that you will find on pre made roof trusses. Allowable spans for 2x4 top chord trusses using sheathing other than plywood e g.

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. While this can be true it is not always accurate unless in some high stress situations. The typical standard for the spacing on the roof trusses is 24 inches. For instance if you are spacing your trusses 18 inches apart make a mark 18 inches from the edge.

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.