Lateral Restraint Straps To Roof

The masonry walls would also benefit from the lateral restraint by restricting movement of the separating walls and gable walls.

Lateral restraint straps to roof.

Lateral restraint straps should be located. Lateral restraint straps are required at floor and rafter or flat roof member levels. If you are building a pitched roof you will also need to use straps at ceiling joist levels. Fixing to solid noggings using a minimum of four 50mm x 4mm steel screws or four 75mm x 4mm 8swg round nails with one fixing in the third rafter figure 1 or.

Lateral restraint straps are required at floor rafter or flat roof member levels and in pitched roofs at ceiling joist levels. Provision is necessary should the height of the wall exceed recommended values found in bs en 1995 1 1 2004 and current building regulations. Vertical loads down through the wall imposed by the roof and internal floors plays a positive role. Even if you are using pre fabricated roof trusses part a of the building regulations and bs8103 remain clear that tensions straps should be no more than 2m apart.

For homes up to and including three storeys two storeys in scotland at a maximum spacing of 2m. Lateral restraint straps should be fixed to the roof structure by either. For homes four storeys or over fixed at a maximum spacing of 1 25m. Even the friction between the sides of floor joists in a wall and the masonry can help reduce sideways movement.