Chainlink Framework All exterior framework shall be made from Gatorshield® ASTM A500 structural grade steel tubing, 1.050” pipe size O.D.; 0.94 pounds per foot weight (± 5%), 50,000 p.s.i. minimum yield strength, as manufactured by Allied Tube & Conduit, Harvey, Illinois.Lightweight tubing or galvanized schedule 40 pipe not permitted. The exterior surface shall be in line, hot-dip galvanized in molten zinc (zinc conforming to ASTM B-6) to a nominal weight of 0.8 ounces per square foot of surface as measured by the methods of ASTM A90. Additionally, the tubing shall be coated with a chromate rust inhibitor and a clear polymeric top coat. The interior tubing surface shall be completely and evenly coated with a full zinc-based galvanizing compound to assure maximum corrosion-resistant integrity. The resulting product will exhibit corrosion resistance at least 3 times (300%) greater than galvanized schedule 40 pipe (ASTM A-53-8) when tested in accordance with ASTM B117 standards. All corners on the frames shall be precision welded, ground, cleaned and given two zinc-rich coatings containing at least 80% pure zinc when dried.Panels installed on graded floors shall be manufactured to follow the slope. Example: if taper in floor is 1-1/2” over 6’ span, slope equals 1/4” per lineal foot of panel. close window