Modular arch tunnel
Self-supporting tunnel with a completely arch cover, whose pedestals must be firmly anchored to the ground. This single arch structure is to be intended as a removable and temporarily type.
It was designed and built to resist against:
- Wear caused by friction from the wind, with thermal welded reinforcement protections on the contact parts between the cover and the carpentry.
- Wear by natural weathering (ultraviolet rays) and aggressive pollutants (acid and/or basic smog) typical of industrial areas or high traffic ones.
It consists of:
- Galvanized steel profiles structure of 70x70 or 80x80 with column distance of 1,5/2 m with heads and arches connected each other and braces. Snow load: 130/230 Kg/square meter – Wind boost: 90/100 Km/h (calculated and certified).
- Covering tarpaulin made of high strength woven polyester, PVC coated on both sides. Total weight of the Covering tarpaulin: approx. 700 g/square meter "Class 2" self-extinguishing – put in contact with the flame carbonizes without transferring it or releasing hot particles (it doesn't burn) and stops the carbonization by itself if the flame misses.Usable with temperatures from -30 to 70°C. Tensile strength 280 DaN/5 cm. Tear resistance about 32 DaN. Color of the covering tarpaulin as your needs and according to our pattern book (green or grey) or, eventually, upon request.
The structure has to be intended exclusively for an agrarian use as storage and goods warehouse and not for a civil one with people stay.