New High Capacity Product Range
Pryda has released a number of new and innovative products for tie down and truss to truss connection in the high wind zones of Australia.
In the high wind zones of north-west, Western Australia and far north Queensland there has always been an issue with installing trusses with the appropriate tie down products. Traditionally truss plants have designed their own tie downs and employed the services of their local engineering workshop. Often there is no design data to support these “tie downs”.
Pryda has developed a range of High Capacity Tie Down products that overcome this issue. The product range has roof tie down capacities of up to 100 kN and is supported with design data and installation instructions. The products also accommodate the tie down of timber trusses to steel wall frames, which are common in some regions, particularly north-west Western Australia.
The first products in the range are the High Capacity Tie-Down Kits which come complete with an 8mm galvanized plate, under washer, threaded rod, Nylock® nuts and domed washers to accommodate the varying angles of the truss. The plate has been cleverly designed with the hole locations positioned, so that the plate can be orientated for use with single, double or triple laminated trusses. There are two kits available, one for truss tie down to timber wall frames (HCTD) the other for truss tie down to steel wall frames (HCTD/WA).
The next significant product in the range is the Cyclonic Grip (PCG). It is typically used in cyclonic areas for tying down roof trusses or other roof members to a steel wall frame with a heavy duty steel or “stiffened” top plate. A single Cyclonic Grip can achieve uplift capacities of 15kN. However when doubled up and fitted with an over-strap, capacities up to 38kN can be accomplished. Pryda supplies over-straps to suit single 35mm, 45mm and double 35mm trusses.
The Pryda Cyclone Strap range has been expanded to include a 900mm strap manufactured from 1.2mm thick G300-Z275 galvanized steel (QHS9/2). When doubled up a Cyclone Strap wrapped around the truss can achieve uplift capacities of 30kN.
Pryda has also released the Hold-Down Bracket (MPCPAH). It is typically used to tie down the truss to the top plate using an M12 threaded rod which has been anchored into the concrete slab. When doubled up capacities of up to 20kN can be realized.
Finally Pryda has released the Twin Fin Heavy Duty Truss Boot (TBHD75/T). The additional anti rotation leg, apart from preventing twisting of the bottom chord of the girder, it also enhances the uplift capacity of the truss boot. Design capacities of up to 50kN can be achieved.
A specific design guide has been created to support this product category and is available by contacting Pryda or by visiting the product information section - Design Guides on the Pryda website.
In the high wind zones of north-west, Western Australia and far north Queensland there has always been an issue with installing trusses with the appropriate tie down products. Traditionally truss plants have designed their own tie downs and employed the services of their local engineering workshop. Often there is no design data to support these “tie downs”.
Pryda has developed a range of High Capacity Tie Down products that overcome this issue. The product range has roof tie down capacities of up to 100 kN and is supported with design data and installation instructions. The products also accommodate the tie down of timber trusses to steel wall frames, which are common in some regions, particularly north-west Western Australia.
The first products in the range are the High Capacity Tie-Down Kits which come complete with an 8mm galvanized plate, under washer, threaded rod, Nylock® nuts and domed washers to accommodate the varying angles of the truss. The plate has been cleverly designed with the hole locations positioned, so that the plate can be orientated for use with single, double or triple laminated trusses. There are two kits available, one for truss tie down to timber wall frames (HCTD) the other for truss tie down to steel wall frames (HCTD/WA).
The next significant product in the range is the Cyclonic Grip (PCG). It is typically used in cyclonic areas for tying down roof trusses or other roof members to a steel wall frame with a heavy duty steel or “stiffened” top plate. A single Cyclonic Grip can achieve uplift capacities of 15kN. However when doubled up and fitted with an over-strap, capacities up to 38kN can be accomplished. Pryda supplies over-straps to suit single 35mm, 45mm and double 35mm trusses.
The Pryda Cyclone Strap range has been expanded to include a 900mm strap manufactured from 1.2mm thick G300-Z275 galvanized steel (QHS9/2). When doubled up a Cyclone Strap wrapped around the truss can achieve uplift capacities of 30kN.
Pryda has also released the Hold-Down Bracket (MPCPAH). It is typically used to tie down the truss to the top plate using an M12 threaded rod which has been anchored into the concrete slab. When doubled up capacities of up to 20kN can be realized.
Finally Pryda has released the Twin Fin Heavy Duty Truss Boot (TBHD75/T). The additional anti rotation leg, apart from preventing twisting of the bottom chord of the girder, it also enhances the uplift capacity of the truss boot. Design capacities of up to 50kN can be achieved.
A specific design guide has been created to support this product category and is available by contacting Pryda or by visiting the product information section - Design Guides on the Pryda website.