Steel Construction - Counterweight Door

This type of door is especially suited to architectural applications due to its ability to accept a wide variety of cladding and glazing patterns. Superior design and rigid quality control ensure a long service life.

Application: Suitable for commercial and industrial use. These doors may be used to span large openings of up to 30 metres wide. Design wind loads range from a standard of 0.5kPa to cyclonic conditions, as required.

RECOMMENDED SPECIFICATIONS
The Fold-Up Series 3000 counterweight door as manufactured by Mirage Industries Pty Ltd., Australia. Twin leaf design, horizontally hinged and counterweight balanced to lift vertically into a folded position. (When specifying, please state type of glazing or type and colour of metal cladding).

STANDARD DESIGN
The doors are constructed from rectangular steel hollow section and suitably braced and trussed for minimum deflection in the open and closed position. The standard design is based on 0.5 kPa wind load. (This may be altered to suit particular situations. The desired wind load must be stated when specifying).

OPENING
Ensure the opening is plumb and true and there needs to be sufficient clearance, at the front and at the rear of the opening to allow for door travel (ie. Forward and Internal Projection). Adequate head room and nib room also needs to be considered.

CLADDING
Most types of cladding are available, with vertical cladding being the standard.

GLAZED PANEL
Doors may be fully or partially glazed to suit the architectural requirements. Standard glass is 6mm clear laminate. Other options are toughened glass, tinted glass, double glazing, polycarbonate or acrylic.

COUNTERWEIGHT COVERS
Each counterweight is encased in a folded steel cover for safety and improved appearance.

LOCKING OPTIONS
Manual - locking by internal pad-bolts to each side of the bottom of the door. (Padlocks supplied by others).
Lock-open - a device to secure the door in the open position is fitted to all manual doors.
Motorised - door held open or closed by the motorisation system.

ACCESS DOORS
If the door height permits an access door may be incorporated into the bottom leaf.

SEAL OPTIONS
Brush, rubber or acoustic seals in various sizes are available. They can be applied to all sides of the door.

POWER OPERATION
Doors may be electrically operated and fitted with sophisticated control systems as required. The standard motor is a 41 5V, 1 hp, 0.7kw clutched motor. Continuous rated or single phase motors are also available. Manually operated doors can be designed to suit future motorisation requirements.

FINISH
As standard all steel is prime coated. Options available are:
►Enamel Paint
►Two-Pack epoxy paint
►Powdercoat
►Hot-Dip galvanised
►Sand blasted and zinc silicate

PLEASE CONSULT YOUR MIRAGE SALES REPRESENTATIVE FOR DETAILS OF SIZES AVAILABLE