Roof Truss Spacing Standard

This is most likely the standard size that you will find on pre made roof trusses.

Roof truss spacing standard.

Spaced sheathing or 1x boards may be reduced slightly. 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. 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. Allowable spans for 2x4 top chord trusses using sheathing other than plywood e g.

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. Almost all residential trusses use this spacing. The standard roof truss spacing is 2. While this can be true it is not always accurate unless in some high stress situations.

Metal roofs and pole buildings. 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. Spacing a live load deflection limited to l 240 maximum and use lumber properties as follows. The typical standard for the spacing on the roof trusses is 24 inches.

These standards are as follows.