Our galvanized steel frame is employed for corrosion prevention and provides years of maintenance-free life to your Fabric Structures and Fabric Buildings.
Big Top Manufacturing continues to seek the best materials available in the market. We have selected Allied Gatorshield® galvanized steel tubing, one of the best corrosion-resistant materials for our fabric building structures.
Independent Salt Spray Test Results conducted by Scientific Control Laboratories, Chicago, IL in accordance with ASTM B-117.*

*Information provided by Allied Tube & Conduit.
Steel Frame Specifications of Big Top Fabric Buildings:
- 55,000 PSI Galvanized Steel Tubing
- Hot Dipped inside and outside with Zinc-04 finish to prevent
corrosion and provide long term durability for any environment
- Maintenance-free life
- Tubing wall thickness range from 11 to 17 gauge
- Tubing sizes range from 1.660 to 3.50 inch outside diameter
- Cadmium Plated assembly bolts or Galvanized Grade 5, A-325,
or A-307
- Full length base beams support the shelter on most models
Engineered to meet most building codes:
- Designed
for wind loads up to 120 mph
- Designed
for snow loads up to 40 lbs per square foot
- Frames
comply with Zone 4 earthquake specification
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