Lateral Restraint Straps Flat Roof

For homes up to and including three storeys two storeys in scotland at a maximum spacing of 2m.

Lateral restraint straps flat roof.

Flat roofs and balconies shall support and transmit loads safely to the structure. Lateral restraint straps should be fixed to the roof structure by either. Where joists and concrete roof elements are used to provide lateral restraint they should. 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.

Heavy restraint straps meet requirements for lateral restraint of roof trusses rafters and joists tied into masonry walls. Simpsons strong tie restraint strap flat 2 5mm x 30mm x 1000mm pack 20 970491. Lateral restraint straps should be fixed to the roof structure by either. Light restraint straps are designed for vertical loads such as wall plates on top of masonry walls.

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. Have a minimum bearing of 90mm or.

Vat add to basket. Lateral restraint straps are required at floor rafter or flat roof member levels and in pitched roofs at ceiling joist levels. 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 to gable walls should be provided at rafter level at all times.

Have restraint straps at 2m centres maximum where joists or concrete beams are parallel to walls. Simpson strong tie restraint strap flat 5mm x 30mm x 1200mm pack of 20 877345. The h and l straps are designed to the building regulations for horizontal and vertical restraint. If you are building a pitched roof you will also need to use straps at ceiling joist levels.

For homes four storeys or over fixed at a maximum spacing of 1 25m.