Once the early research that evaluated weathering steel performance was complete, recommendations
were developed for the proper design and use of weathering steel structures. Most notably, these
guidelines are presented in the 1989 FHWA Technical advisory and NCHRP Report 314, also issued in
1989. Considerations for utilizing weathering steel often include economics (lower cost due to
maintenance of paint coatings), safety (eliminating painting over traffic), and aesthetics. However, in all
cases a weathering steel structure is only cost effective if it is used in the proper environment. The reports
listed above, and many others, typically group the different environments into four categories: rural,
urban, industrial, and marine (in approximate order of least aggressive to most aggressive). Due to
increasing Environmental Protection Agency (EPA) restrictions, levels of atmospheric pollutants have
been decreasing since the research of the early 1980’s. As a result, it is expected that nearly all bridge
structures in Iowa are located environments that may be categorized as rural or urban.
Microclimates present within each environment also affect the performance of weathering steel bridges.
For example, a weathering steel structure in a marine environment could perform very well or a structure
in rural environment could perform poorly due to varying microclimatic conditions. Conditions can also
vary from location to location on the same bridge superstructure. Some factors commonly affecting
microclimates include:
Shelter
Orientation
Angle of exposure
Time of wetness
Chloride exposure
Atmospheric pollutants
Debris
Continuous moisture and thermal effects
Structural details and geometries
Product Name | Weathering steel structures will perform best |
Brand Name | GNEE |
Material | Carbon Steel, Corten Steel, Stainless steel |
Surface Finish | Rust, Bare, Powder Coated, Polished, Black Heat-resisting Paint, Iron Oxide |
Item Number | GN-FP 1101 |
Size | Diameter : 320mm--1200mm Thickness : 1.2mm--3.0mm |
Package | Inside : Anti-wear foam paper Outside : Plywood box |
MOQ | 1 Piece |
Sample | Free (without any condition) |
OEM & ODM | Customized service is available. |