Lateral Restraint Straps To Flat Roofs

A flat roof is held down at the joist bearings not the sides that link should be www halftheinformation4plans co uk stupid guidance php woody 22 sep 2016.

Lateral restraint straps to flat roofs.

Best practice of lateral restraint straps. Ensure all restraint straps fit tightly against the masonry wall face. Enjoy watching and keep yours eyes peeled. Lateral restraint straps should.

Lateral restraint straps are required at floor and rafter or flat roof member levels. Ensuring concrete elements and timber joists where they are built in have a minimum bearing of 90mm. Lateral restraint should be provided to walls by. 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.

Provision is necessary should the height of the wall exceed recommended values found in bs en 1995 1 1 2004 and current building regulations. Proving restraint straps at 2m centres where joists run parallel to walls. 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 should have a minimum cross section of 30mm x 5mm and a minimum anchorage downturn of 100mm.

Lateral restraint straps are required at floor rafter or flat roof member levels and in pitched roofs at ceiling joist levels. If you are building a pitched roof you will also need to use straps at ceiling joist levels. 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.

Lateral restraint to gable walls should be provided at rafter level at all times. We did something different with this how to video and filmed it as we was working and having a chat. The level of galvanizing for straps and their fixings should be in accordance with tables a 1 and a 2 of bs en 845 1 reference should be made to appendix 6 1 f. The straps you described are lateral restraint for the walls which you dont need.