The following are standard Architectural Specifications for internal partition systems using PROMINA®-HD.
The designer must determine the suitability of the design to the application and requirements before undertaking or constructing any works relating to
the specifications and where in doubt should obtain the advice of a qualified engineer.
Fire Attack From Internal Side / Non Loadbearing
60 minutes of fire rating, integrity and insulation in accordance with the criteria of BS476: Part 22: 1987.
Supporting Structure
Care should be taken that any structural element that the partition system is supported from, e.g. concrete/brick wall or slab, has
at least fire resistance of 60 minutes.
Lining Boards
A first layer on each face of 12.5mm gypsum board. Stagger joints between layers by at least 300mm nominal centres. Outer layer is 6mm of
PROMINA®-HD matrix engineered mineral boards as manufactured by Promat
International (Asia Pacific) Ltd. Stagger joints by at least 300mm nominal centres. Standard board dimensions 1220mm x 2440mm x 6mm.
Fixing
Galvanised steel frame made of perimeter steel channel will be secured to the floor and, ceiling and walls with 40mm x M6 masonry anchors at 600mm centres.
Vertical steel studs are friction fitted into the tracks at 610mm centres for boards to be installed. Adequate clearance for vertical expansion will be
allowed at the ceiling/top track. No clearance is necessary at the bottom track.
12.5mm of gypsum board will be fixed to perimeter channel using 25mm drywall screws at 200mm centres. Then the second layer of 6mm PROMINA®-HD
board is fixed to the gypsum board with 32mm of drywall screws at 200mm nominal centres.
Tests & Standards
The complete system along with the material and framing is tested in accordance with BS476: Part 22: 1987. The partition system should meet the
requirements as specified under Clause 5.
Jointing
Plain butt joints between machined edges of boards. (1)
Joints filled in preparation for painting. (2)
Joints filled and taped in preparation for decoration. (3)
Follow-on Trades
Surface of boards to be prepared for painting/plastering/tiling(4) in accordance with manufacturer’s recommendations.
NOTES:
(1), (2), (3), (4), * delete as appropriate.
Perimeter gaps will be filled with fire resistant PROMASEAL® AN Acrylic Sealant.
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