Teatr Wielki Łódź

MAŁKOWSKI-MARTECH S.A. - Sharing Vision of Safety

Project characteristics:

Three doors have been installed in the main stage area:

Front curtain:
- EI 120 rated single-leaf overhead door (W x H: 14870 x 9900 mm)
Scene rear curtain:
- EI 120 rated single-leaf overhead door (W x H: 16920 x 9970 mm)
Set of side curtains:
- Two EI 120 rated single-leaf overhead door (W x H: 11470 x 9900 mm)
- EI 120 rated sliding triple door (W x H: 3560 x 9950 mm)
- EI 120 rated sliding double door (W x H: 2470 x 9950 mm)

Project name	Upgrade of main stage technical facilities under a project titled “Improvement of building infrastructure at Teatr Wielki in Łódź”
Project owner	Teatr Wielki in Łódź
Project address	Plac Dąbrowskiego, 90-249 Łódź
Contractor	Małkowski-Martech S.A.
Sector	Fire doors
Additional information	Letters of reference

Specific characteristic of the retrofitted building
Necessary interfacing of the doors with other scene facilities
Shielding of mobile features up to 2.5 m tall
Installation of drive unit components with protection against unauthorised access
Minimised distance of the drive components from the shell/curtain to prevent the latter from falling out from their guides
Installation of emergency stop devices and automatic limit switches
Closing speed limited to less than 0.2 m/s
Installation of a high-weight ballast cage with reduced movement in the event of a failure

The overhead doors feature a system of counterweights suspended on cable pulley assemblies to counter the door leaf weight. The doors are lifted open with drive units and held open by e-mag couplings. The end position of the door is controlled by a system of limit switches. The drive units are managed by a fire control panel with backup batteries by which it is insensitive to mains power outages. The independent fire control panel manages the door opening and closing, using indication and warning devices. Emergency door closing is propelled without the electric drive, on the command from the site FAS control panel. In the event of a fire hazard, the fire control panel releases the electromagnetic clutch to initiate gravity-assisted closing.

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