Lateral Restraint Straps Flat Roof

Provision is necessary should the height of the wall exceed recommended values found in bs en 1995 1 1 2004 and current building regulations.

Lateral restraint straps flat roof.

Lateral restraint straps should be located. Lateral restraint straps should. The masonry walls would also benefit from the lateral restraint by restricting movement of the separating walls and gable walls. Flat roofs should be constructed to provide protection from wind uplift this can be achieved by either being sufficient weight to prevent lifting or by fixing the joists to the wall plates and securing the wall plate with vertical holding down straps at least 1m long and 30mm x 2 5mm in cross section at 2 0m centres.

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. Have a minimum bearing of 90mm or. Lateral restraint straps should be fixed to the roof structure by either. Have restraint straps at 2m centres maximum where joists or concrete beams are parallel to walls.

Lateral restraint straps are required at floor and rafter or flat roof member levels. Lateral restraint to gable walls should be provided at rafter level at all times. Where joists and concrete roof elements are used to provide lateral restraint they should. For homes four storeys or over fixed at a maximum spacing of 1 25m.

Lateral restraint straps are required at floor rafter or flat roof member levels and in pitched roofs at ceiling joist levels. Simpson strong tie restraint strap flat 5mm x 30mm x 1200mm pack of 20 877345. Flat roofs and balconies shall support and transmit loads safely to the structure. Restraints are only required at ceiling level where the height from the top floor level and the roof height is 16 times plus 10mm the thickness of the wall that is being restrained.

Lateral restraint straps should be fixed to the roof structure by either. If you are building a pitched roof you will also need to use straps at ceiling joist levels.