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Construction
Frame: 80 x 80 x 8 mm mild steel angle.
Door leaves: 6 mm mild steel plate with 100 x 6 mm flat bar, welded to both sides to give strength and rigidity.
Over Panels: 6 mm mild steel plate with 100 x 6 mm flat bar, welded to both sides to give a panelled appearance. Bolted in place with locknuts to rear.
Double Doors: have heavy duty channel mullion, bolted into place. Inactive door leaves also bolted onto the mullion.
Finish
One coat of red Zinc Phosphate primer finish as standard for on-site painting. Factory powder coating is not available for these doors.
Hinges
Two heavy duty rising butt hinges with one plain hinge to ensure closure of the active leaf. The inactive leaf has three plain hinges. All hinges are welded into position.
Door Furniture
Internal three point operation, heavy duty mild steel locking assembly secured by external padlockable handle or alternatively padlocked internally without external access.
OR
Surelock McGill three-point locking panic bar system to internal face with padlockable Sunray 6000 Hasp and Staple to external face allowing escape from inside and keyholder access from outside.
Fixings
Frames are supplied complete with flat post-fit lugs.
14 mm diameter holes are provided for M12 sleeve-type anchors (supplied), 75 mm of which should be located within the supporting structure.
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Mastic
In order to achieve 4-hour fire rating it is necessary to seal around main frame with 4-hour intumescent mastic (not supplied), by Lorient Poly Products or similar equivalent.
Supporting Structure
Frame must be fitted into brick or reinforced concrete that has been tested or assessed to an excess of 4 hours fire resistance, usually with a minimum 150 mm high threshold.
Framework
The angle framework wraps around the opening, requiring an upstand, lintel and clear wall space to either side. The door leaf is mounted in front of the frame and is larger than the opening (Dimension S). See appropriate door drawing for further detail.
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Vertical section |
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