To enable easy installation, SRP™ Studs are equipped with a generously knurled face providing a secure surface for attaching high density wall board products [FIGURE 1 and FIGURE 2].
Ensure Standard SRP™ Stud centres are as per SRP™ Stud Height Tables, [TABLES 6.1 – 6.5]. SRP™ Whisperwall™ Studs are installed exactly at 600mm centres, except end of the wall, doorway openings and intersecting or exterior wall connections. In all above cases SRP™ Stud centres should be no more than 600mm centres apart [see FIGURE 3, FIGURE 18 and FIGURE 19].
Ensure all SRP™ Studs are plumb [vertical], facing the same direction, [FIGURE 3], and the perimeter SRP™ Studs’ webs [width, flat back side] are against the connecting wall, opening or free wall ends [FIGURE 18 and FIGURE 19]. This will enable adequate bracing, flat joint surfaces and accessible utility runs to be achieved.
Ensure that all SRP™ Studs remain dry in service and are not subject to water ingress. As per the New Zealand Steel Durability Statement, when in contact with concrete, or when there is the potential of condensation or water ingress through the wall, a damp-proof course [DPC] is used as required, which is to be at least 10mm wider than the SRP™ Stud, i.e. minimum 5mm either side of the SRP™ Stud [see FIGURE 7].
For standard partitions the expansion/contraction gap is 10mm between the top of the SRP™ Studs and the underside of the head SRP™ Track [see FIGURE 3 and FIGURE 28].
Installation of Fire Rated Walls is as per GIB® Fire Rated Wall Systems October 2012. Amongst other important aspects, this GIB® document, calls for a 15mm gap between the top of the SRP™ Studs and the underside of the SRP™ Deflection Track to allow for expansion and contraction to a maximum of 2700mm high partitions [see FIGURE 3 and FIGURE 29]. Partitions above 2700mm are also available however; a specific structural design will be required. Contact SRP™ for assistance if required.
For other Performance Systems, like acoustic walls e.g. SRP™ Whisperwall™ and standard SRP™ Stud acoustic walls, leave a 15mm expansion gap between the top of the SRP™ Studs and the underside of the head SRP™ Track [see FIGURE 3, FIGURE 29, FIGURE 30 and FIGURE 31].
Installation of SRP™ Whisperwall™ and other acoustic performance walls are as per GIB® Noise Control Systems March 2006 and relevant sections of this website.
To install the SRP™ Stud, insert vertically sideways between top and bottom SRP™ Tracks. Ensure the SRP™ Stud is at the required position, plumb [vertical] and facing the appropriate way. Then rotate the SRP™ Stud until it clicks to set. No further mechanical fastener is required, as the friction fit is sufficient to hold the SRP™ Studs in position subject to the building being enclosed [see FIGURE 2 and FIGURE 3].
For added rigidity of standard [non-fire rated, SRP™ Whisperwall™ or non-acoustic] partitions especially in buildings exposed to higher wind speed; additional mechanical fasteners such as 8g Tek screw and/or Pop rivets or crimping between the SRP™ Stud and top and bottom SRP™ Tracks can also be used to secure the SRP™ Stud ends to the SRP™ Track during installation. Please consult with SRP™ and/or a structural engineer re specific design and the position, centres and type of fastener etc. used.
For fire rated walls no screw fastening to the top or bottom SRP™ Track is allowed. As per GIB® Fire Rated Wall Systems™ October 2012 a light locating fastener that fails at high temperatures, such as single aluminium rivets may be used. Otherwise, positive fastening must be avoided.
For SRP™ Whisperwall™ no fastening to the top or bottom SRP™ Track is allowed, as it would compromise the tested STC values. For other acoustic performance walls refer to GIB® Noise Control Systems March 2006.
Corners, junctions in intersecting walls, walls ends, doors [jambs and heads]/openings especially in High Wind Zone areas or areas with direct to wall/cantilevered loading may require extra rigidity. This can be achieved by using a SRP™ Boxed stud [FIGURE 1]. For SRP™ Whisperwall™, use un-punched SRP™ Studs for boxing or add an extra SRP™ Stud. In other than SRP™ Whisperwall™ applications increase the gauge of the SRP™ Stud or use a timber frame for doors and openings. Alternatively, the area can be stiffened by using single or SRP™ Continuous Nog Tracks. Please consult SRP™ re specific design if required.
A common trade practice is to secure only the bottom of the neighbouring SRP™ Studs of door frames, openings, corners and intersections. Securing the SRP™ Studs to the SRP™ Deflection Tracks, especially around concentrated floor live load, has the possibility of restraining the movement and could cause partition cracking. In these cases refer to DOORS AND OPENINGS SECTION of this document and consult with SRP™ and/or a structural engineer re specific design.
For more detailed information about corners and door/ openings see the CORNERS, INTERSECTIONS AND WALL ENDS – TERMINATIONS page.
