The Kingframe Steel Framing System (SFS) Slotted Stud Deflection Head Detail*

provides both installation and performance benefits offering up to 50% savings compared to

conventional deflection head details.

Introduction

The slotted stud is a detail used to accommodate deflection of the primary structure in the Kingframe SFS. The

concept is shown below.

Figure1: Slotted Stud Detail

Studs are cut to length and punch slotted in the factory for delivery to site. On site, the studs are set out and fixed

at base as for all other deflection details. At head, fixings are installed through both flanges of the head track

through the slots in the studs. This allows for relative deflection of the head track whilst still providing restraint for

the studs.

Ordering: When placing orders for slotted studs, the order must clearly state that slotted studs are required. This

is the responsibility of the installer. For more information please visit: www.kingspanpanels.co.uk/sbs

*Patent applied for

• Feature - Slotted hole detail to top end of SFS stud, visible beneath the base line of the head track for

ease of fixing.

• Function - To provide adequate deflection tolerance to infill wall areas between floors.

• Benefit - Increases the speed of installation, while providing cost and material savings, when compared

to conventional deflection head details.

Site Installation

General Studs: These are studs not forming openings in the SFS system and are generally set out at 600, 400 or

300mm centres across the elevation. The installation sequence is as follows:

1. The head and base tracks are installed

prior to the studs. This is carried out in

accordance with the Kingspan Steel

Building Solutions engineering

specification which indicates the setting

out requirements from grid. The drawings

also specify minimum fixing requirements.

2. Studs must be checked for length prior

to installation to ensure that a deflection

gap is left at head and the studs sit fully

inserted into the base track. The deflection

gap should be taken as 25mm unless

otherwise stated on the Kingspan Steel

Building Solutions drawings. If the studs

are cut to length on site, they must be cut

at base such that the slots remain intact at

head. Figure 2: Standard base track connection

3. Studs are set out at base according to the Kingspan Steel Building Solutions engineering specification. They

are inserted into the base track at marked locations and then plumbed for level.

4. The studs are fixed at base by driving one ø5.5mm x 25mm pan head Tek screw through each flange of the

base track and stud. Care must be taken to ensure that the stud is fully inserted into the track and that the fixings:

• are perpendicular to the flange;

• are fully driven;

• observe a minimum edge distance of 15mm; and,

• are not driven into a slot at base. Figure 3: Fixing location

5. Studs are then re-checked for level prior to fixing at

head.

6. At head, ø5.5mm x 25mm pan head Tek screws are

driven through both flanges of the head track into the slots

which are pre-punched in the studs.

For information concerning installation of Kingframe

SFS, please contact the Kingspan Steel Building

Solutions Technical Team Tel: +44 (0)121 753 7050

www.kingspanpanels.co.uk/sbs