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Air supported Structures is a global leader in the air-supported structure market space, proudly providing the most rigid quality standards in the industry to our customers whose needs include the enclosure of commercial, industrial, and recreational facilities. Our highly specialized team of experts proudly brings over 30 years of continuous experience in the design, engineering, manufacturing, and installation of air domes to the table. Sigma’s extensive experience in this field is demonstrated by the successful installation of tens of millions of square feet of air-supported structures, for applications including, but not limited to: sports arenas, waste management / containment facilities, exhibition spaces, warehousing and storage buildings, mobile utility structures, emergency shelters, and industrial process enclosures.

Equipped with cutting-edge technologies, Sigma contractors combine innovative custom design with state-of-the art engineering to construct air-supported structures that offer tremendous cost savings, as well as significantly reduced construction lead times, when compared to steel or other traditional construction methods. Durable, long-lasting, rapidly deployable, and simple to maintain, all of our air-supported fabric structures are constructed from only the highest quality structural grade PVC fabric and always meet or exceed industry standards and building code requirements, including the California State Fire Marshal (CSFM) and NFPA-701 2 sec Flame Tests, 150 MPH wind loads, and 50 lb./ft2 snow loads.

End-to-end, in-house design, engineering, project management, fabrication, and installation allows Big Span to rise to the most extreme challenges associated with air-supported structures at all stages of the process.  From the largest air-supported structure in the world, stretching more than 6.5 acres across a landfill to enclosing an entire existing petroleum refinery without halting operations, no test has ever proven too large or too difficult for Sigma’s elite team of air-support engineering masters.