Whether it is a specially fabricated dish mount you require or an extensive tower rehabilitation project, locating a fabricator to meet your exacting requirements is sometimes a difficult task. Steel fabricators for stairs, handrails, elevated equipment room platforms and other fabrications are available in all areas, but it is more difficult to find resources to handle an extensive rework application. Ideally, it would be best if your fabrication firm had both steel and tower construction backgrounds, but this is not the norm. Even if the project engineer has provided an excellent set of fabrication drawings, you will benefit by carefully reviewing them with the fabricator’s detailer. Bring along photographs of the structure as well. Shop drawing purists will tell you that all they need is the engineer’s drawings and specifications, but you would be surprised at how many fabrication errors can be prevented from looking at the actual structure.
As a minimum, structural steel used on a communications tower must conform to American Institute of Steel Construction (AISC), Specification for Structural Steel Buildings, or American Iron and Steel Institute (AISI), Specification for the Design of Cold-Formed Steel Structural Members per EIA-222F, Section 1.1.1.
These standards require that your fabricator must provide, when requested, certified data from his supplier showing the test results of the mechanical and chemical properties of the material being used in the form of a Mill Certification Report. In addition, Section 1.1.2 of EIA-222-F states that if materials other than those specified are used, that the supplier must still provide the same data.
Pricing is always project specific. We recommend that you contact our listed fabricators to obtain additional information about their services, capabilities and experience.