SPECIFICATIONS

1. ALUMINIUM DOOR, WINDOWS, AND CURTAIN WALLS

1.0 General Standards and System Description

1.1 Doors and Windows

Outer frame members shall be mitre cut with 45 degree angles and reinforced with extruded aluminium corner cleats securely jointed by mechanical crimps. Intermediate mullion and transom bars are square cut, machined, and securely fixed to outer frame with self tapping screws driven into screw receptacles in the profile joints which shall be sealed against entry of water. Glazing beads shall be angled to minimize dust concentration and air condition water sheds.

Where the sizes of door leaves, as recommended by Rukshan Widyalankara- Consultant, exceeds the recommended sizes and weights of the manufacturer, profiles should be reinforced with manufacturers standard reinforcing extrusions.

Weep holes for the draining of water shall be provided not be visible to exterior. No screws shall be visible, and rivets shall not be used in joinery. Perimeter sections that are in contact with the structure shall be provided with polystyrene or a suitable equivalent space fillers.

Marginal allowance of 5mm or as recommended by the sealant manufacturer shall be allowed when confirming the overall size of window. All pivoted doors shall be provided with concealed door closers with hold and open facility unless otherwise specified. All shopfront doors shall be provided with standard manufacturers thresholds with suitable backing strips.

Aluminium works shall confirm to BS 4873:1972 and BS 5286 for Aluminium Alloy Windows, or to any other Specifications incorporated in Contract by Rukshan Widyalankara- Consultant.

The performance of all installation shall confirm to BS 6375 Part 1 for Weather Tightness, BS 6375 Part 2 for Operations and Strength Characteristics, BS 5368 Part 1 for Air Permeability Test.

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