Roof Strut Spacing

The spacing between rafters in a given building is part of the engineering calculations that determine the required structure of the roof.

Roof strut spacing.

4 5 maximum for both sheet and tile roof. Struts should be adequately supported over studs in timber walls. Maximum supported roof area 7 0m 2. They should have anti slip blocks where necessary to prevent them sliding horizontally.

Maximum supported roof area 5 4m 2. Maximum strut spacing 1 8m. A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof trusses usually occur at regular intervals linked by longitudinal timbers such as purlins the space between each truss is known as a bay. Typical roof truss.

Rafters have a tendency to flatten under gravity thrusting outwards on the walls. Follow this guide to ensure the spacing and stability of your diy roof trusses. The trusses should be a little longer than the exact width to allow for overhang and you will need sufficient trusses to mount across the length. The struts are needed in the roof frame to transfer the loads from underpurlins and other beams to the load bearing walls.

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. This means that if you re in charge of repairing or installing roofing trusses you ll be expected to hold to these standards. Maximum strut spacing 2 1m. These standards are as follows.

The roof truss spacing standard is important because eighty percent of new homes are built with standard pre fabricated trusses.