VPS steel structures are designed to meet or exceed the requirements of the IBC 2006, IBC 2009, and IBC 2010. All steel tubing and plates are finished with a minimum of 2.5 to 3.5 mil thick, UV-inhibited, weather-resistant powder coat. Where structure size or determined loads require larger structural steel members, or steel greater than 7-gauge thickness, carbon steel may be substituted. Cleaning and coating of carbon steel conforms to the following:
- Media blast of black carbon steel to NACE 3 finish
- Commercial Blast Cleaning - Removal of mill scale, rust, rust scale, paint or foreign matter by the use of abrasives propelled through nozzles or by centrifugal wheels, to the degree specified. A Commercial Blast Cleaned Surface Finish is defined as one from which all oil, grease, dirt, rust scale and foreign matter have been completely removed from the surface and all rust, mill scale and old paint have been completely removed except for slight shadows, streaks, or discolorations caused by rust stain, mill scale oxides or slight, tight residues of paint or coating that may remain; if the surface is pitted, slight residues of rust or paint may be found in the bottom of pits; at least two-thirds of each square inch of surface area shall be free of all visible residues and the remainder shall be limited to the light discoloration, slight staining or tight residues mentioned above.
- An industrial thinner solvent wash is applied, if necessary, and prepare the surface for powder-coating, where wall thickness requires preheating.
All carbon structural steel shall be ASTM A-36, except pipe columns, which shall be ASTM A-53, Grade B, unless otherwise noted. All internal fittings are welded on one side. Structural steel is detailed, fabricated, and erected in accordance with IAS specifications. All shop and certified welders following procedures published in the latest edition of the American Welding Society specifications. Shop connections are welded unless otherwise noted. All welds are performed using gas-metal arc welding with E70C-6M-H8 wire, unless otherwise noted on drawings. Field connections are bolted unless otherwise noted on drawings. All fillet welds are a minimum 3/16” unless otherwise noted. All steel shall be welded shut at terminations to prevent internal leakage.