Section 6.3.6
Openings
An opening within any structure provides a weak spot. Designs must be followed to ensure service life is reached and special attention must be paid when provided in a protected hallway.
Door width measured to fit door, door frame and appropriate door margin.
C-track to be turned up by a minimum of 300mm for fire doors.
Place appropriate size timber stud within the frame where required.
Frame cut and bent to form the door head.
Frame to return down by a minimum of 150mm.
Provide additional frame for fixing the plasterboard above openings.
To prevent cracking at the door jamb opening, plasterboard joints should occur over the opening.
In a protected hallways a spandrel panel detail will be required.
Form a spandrel panel detail by using 12.5mm. Board sandwiched between the door opening stud and a short length of metal stud in the doorway head.
Screw fix through the metal stud, plasterboard, metal stud to provide a secure spandrel panel detail.