From Forgefix
-Horizontal (Heavy Duty) Bent Restraint Strap.-Galvanised heavy duty restraint straps are suitable for horizontal restraint applications such as tying timber roofs and floors into masonry walls.-Multi holed at 25mm offset centres, restraint straps should be fixed using either 50mm long no.12 woodscrews (using wall plugs in masonry for vertical restraint) or 75mm x 4.0mm diameter galvanised nails into timber.-Designed and tested in accordance with BS EN 845-1, The Building Regulations, BS5268 Part 3 and other building standards for vertical and horizontal restraint.