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- Length max 30.00 m
- Width 2.50 m
- Height 1.48 m or 1.78 m
- Inter-axis varies from 2.0 m to 3.00 m
- Dead load from 905 kg/m to 1.090 kg/m
- Finishing monolithic elements are completed with vertical fixed or openable window frames
- Fire resistance R 120 - 180 (UNI 9502)
- Insulation self-extinguishing polystyrene panels in different thickness matched with their bituminous membranes; thickness depends on the required thermal transmittance. In case of wholly metallic roofing a mineral wool is used
- Waterproofing reinforced bituminous slated membrane or covered with metal sheets. The Zephir system guarantees about 400 lux in an 8.00-m tall building