Simpson strong tie restraint strap flat 5mm x 30mm x 1000mm pack of 20 877344.
Roof restraint straps.
Restraint strap are made from galvanised steel and have been designed to be used when connecting timber floor and roof systems to masonry walls ensuring fast and effective anchoring against uplifting forces like wind.
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Hurricane straps are made from galvanized steel.
Trussed rafter roof bracing systems are designed to provide adequate stability to the entire roof structure and it is recognised that providing the straps are located at suitable positions and centres to accommodate the requirements for wall restraint the longitudinal bracing members generally comprising 25mm x100mm sawn timber together with their fixings to the trussed rafters should be adequate to transfer the forces from the restraint straps to the roof construction.
It is important to note that while most manufacturers state that heavy duty straps are 5mm thick they will most likely be between 4mm and 5mm and tending to be more towards 4mm.
Restraint straps or a restraining form of gable ladder should be used where required to provide stability to walls and be installed in accordance with the design.
These straps are usually done after the home is completely framed.
For homes up to and including three storeys two storeys in scotland at a maximum spacing of 2m.
Heavy duty straps are used for horizontal restraint of roof joists trusses or rafters attached onto masonry walls.
Heavy restraint straps meet requirements for lateral restraint of roof trusses rafters and joists.
Simpsons strong tie restraint strap flat 2 5mm x 30mm x 1000mm pack 20 970491.
The masonry walls would also benefit from the lateral restraint by restricting movement of the separating walls and gable walls.
Restraint straps should be provided to one side of the wall only unless the design shows that strapping to both sides is required.
The h and l straps are designed to the building regulations for horizontal and vertical restraint.
Lateral restraint straps are required at floor rafter or flat roof member levels and in pitched roofs at ceiling joist levels.
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Access to your roof trusses or roof system is easy at this point.
Longitudinal braces that are present to provide stability to a trussed rafter roof can also be used for restraint of the wall but additional braces will usually be needed to achieve the required spacing.
Install hurricane straps to a roof on new construction.
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Lateral restraint straps should be located.
