The spaceframe structure is a combination of a modular, spatial, metallic structure (poles and joints) with suitably tensioned and stabilized single and/or double membrane underneath.
The advantages of the double membrane model are essentially: insulation, with an important reduction in the thermal coefficient, more comfortable in Spring and Autumn, reduced condensation and less echoes. The structure has been designed to withstand snow + wind + pre-tension + its own weight.
The covering membrane is made from PVC coated, very tough Trevira polyester fabric, in translucent white and green, resistant to the elements and with the characteristics listed in the specifications.
The membrane is placed under the structure and tensioned with chains and special flexible coupling discs, and has undeniable advantages of duration and a notable reduction in condensation. In effect the prime advantage is in the duration and maintenance of the cover, not having direct points of contact with the galvanized structure, it is not subjected to damage through chafing and a quicker deterioration.
From a static point of view the hung cover guarantees load distribution directly to the joints without weighing on the single poles, and therefore not bending them. The BASIC SPACEFRAME STRUCTURE's sliding buffer is carried out by a sliding system to allow the opening of the structure's two longitudinal sides for "all weather" use. The metal structure, protected from rusting through galvanization in melted zinc carried out according to the UNI E14.07.000.0 (February 93) standards, has been designed according to steel construction calculations under load from snow, wind and its own weight as indicated in the Min. Dec. DM 09.01.96 and subsequent notification 04-07-96 no.156AA.GG./STC.
It is suitable for 1st and 2nd category seismic areas. The homogeneity of the strain transmitted to the foundations allows an absolute saving in the reinforced concrete works.