Choose the relevant SRP™ Stud and SRP™ Track size and BMT using the SRP™ Stud Height Tables, [TABLES 6.1 – 6.5], bearing in mind that for all applications the SRP™ Track BMT must be the same or greater than the SRP™ Stud BMT.
» For Fire Rated Walls, the use of deflection head SRP™ Track with a minimum of 50mm leg length is required. Installation as per GIB. Fire Rated Wall Systems October 2012.
» For other walls, including SRP™ Whisperwall™ use the minimum of 30mm leg length SRP™ Track.
Ensure all SRP™ Tracks are level [horizontal], aligned and adjoining SRP™ Tracks are butt jointed with a 2mm expansion gap between them allowing for substrate expansion/shrinkage [see FIGURE 7].
Ensure that all SRP™ Tracks [top and bottom] will remain dry in service and are not subject to water ingress. As per the New Zealand Steel Durability Statement, when in contact with concrete ensure a damp-proof course [DPC] is used as required, which is to be at least 10mm wider than the SRP™ Track, i.e. minimum 5mm either side of the SRP™ Track [see FIGURE 7].