Concrete Poles

The manufacturing process adheres to strict standards. The water used in the construction of these poles contains no harmful quantities of alkalines, oils or organic matter to ensure maximum integrity of the concrete. The standard mix is designed to reach 7,000 psi in 28 days with a 5% ± 1% air entraining. A minimum compressive strength of 3,500 psi is reached before transfer of prestressing force; then a minimum of 28 days compressive strength of 7,000 psi is achieved. When necessary, the poles are steam cured. The prestressing is done using stress-relieved wire strands with a minimum ultimate strength of 270,000 psi and a final prestress tension of at least 60% - 70% of the ultimate strength. Concrete coverage of the steel prestressing cable shall be a minimum of 5/8" throughout the length of the pole. Where minimum coverages cannot be maintained due to cable entrances, hand holes, wire outlets, etc., the prestressing cable shall be protected from corrosion with a moisture resistant sleeve or coating.

The concrete used in these poles conforms to ASTM C-150, type 1 or 3, and is mixed with coarse aggregate: either glacial gravel (standard), limestone or granite. The aggregate conforms to ASTM C-33 and uniformly graded from a maximum size of 3/8" to 5% passing a #100 sieve.

Colors: Part numbers listed for the poles featured in this section reflect the standard color of "Sky Gray" with an etched finish and an acrylic sealer.

You may select from any color on our chart below, or have a custom color designed for you. Color samples shown may vary slightly from actual colors. The lighter shade of the bottom color (odd numbers) represents solely the etched surface. The darker top-half (even numbers) represent the same color finished with an acrylic sealer.