Photo: © Riedl GmbH
Many things have changed for sliding door manufacturers, architects, and builders since the European Standard EN 81-58 - fire resistance of shaft doors – has taken effect. The minimum values in terms of the thickness of the door leaf, the width of the frame, or the height of the door frame are no longer regulated - a sliding elevator door must now only successfully pass the strength test and the fire resistance test. Therefore, elevator door manufacturers have much more room for creativity in the development of new products.
The designers of the door department at Riedl threw out all current standards and developed LIZ – a completely new generation of telescopic sliding doors particularly suitable for the modernisation or modification of existing elevator systems.
LIZ is a special door designed for almost any application. It creates space as part of a modernisation: due to the door packet thickness of only 125 mm, the cabin floor space will remain almost unchanged if LIZ is used instead of an older hinged door. The elevator will continue to move in the preexisting shaft but with new, state of the art, automatic doors.
In new constructions, LIZ can save up to approx. 15 cm of depth of each floor. At a price of 8,000 Euros or more per square meter in some German cities, this has a direct effect on the size of sellable floor space and is therefore as good as cash for the builder. The slim construction of the telescopic sliding door LIZ is also an advantage in terms of accessibility and increases the attractiveness of updated buildings for buyers and tenants.
Photo: © Riedl GmbH
Both the 2-leaves and 4-leaves LIZ doors comply with the newest fire protection ordinance EN 81-58. Riedl is currently the only manufacturer that has been able to pass the stringent fire resistance test with such a slim door.
"We have seen for ourselves the difficulties involved in a 4 panel door passing the fire resistance test. But LIZ passed with flying colors. We have incorporated many innovations that have never been possible in these types of doors", explains Peter Andrä, managing director at Riedl. The doors are of course also TÜV-tested in terms of strength requirements pursuant to EN 81-1/2, Schedule F, and have passed those tests.
Standard LIZ doors are made completely of electro-galvanized steel plate and are optionally available in V2A stainless steel either grinded or structure-laminated. The door frame, and leaves are completely made of V2A (material quality 1.4301 or higher), as are the thresholds of the shaft and cabin doors. The jambs are available in a width of 100 to 150 mm and a depth of 15 to 50 mm. The cabin doors are equipped with the newest generation of Siemens door operators, AT 12 or AT 18.
Riedl Elevators company profile
The Riedl elevator manufactory located in Feldkirchen in southern Bavaria, Germany, combines decades of experience with modern manufacturing methods. It is a flexible, mid-sized company providing a skillful response to customer demands. The construction of elevators - its core competency - is also beneficial when it comes to the marketing of doors. The robust, functional and user-friendly doors are easy to adjust and offer a high level of reliability. Not mass production but rather individual, custom-made fabrication is Riedl’s strength. Due to their high quality an ever growing number of elevator providers use Riedl doors in their systems.
Further Information:
Riedl Aufzugbau GmbH & Co. KG
Sonnenstraße 24 • 85622 Feldkirchen, Germany (near Munich)
Tel.: +49 (0) 89 - 90 00 1-0
Fax: +49 (0) 89 - 90 00 1-61
eMail: info@riedl-aufzuege.de
web: www.riedl-aufzuege.de
german version