CAP Wins Chandler Challenge! Selected as Top of Class.

Composites Chosen To Stop Fusing Covers

Iron Covers fusing shut convince the city to go to composites.

Chandler Compares Composite Options

In a comprehensive review of four different composite options, Chandler engineers reveal quality differences.

CAP selected after intense review!

CAP covers were chosen among all the composites presented and continue to satisfy Chandler today.

Happy to Have These New Cities Use CAP

Huntsville, TX


Fort Bliss - El Paso, TX


Allen, TX


Flagstaff, AZ


Queen Creek, AZ


Melbourne, FL


CAP Covers Easily Surpass the American Traffic Standard

... With "Flying Colors" (Dr. Robert Jones, University of Texas, RGV)

The American Association of State Highway and Transportation Officials (AASHTO) designates the Standard Specification for Drainage, Sewer, Utility, and Related Castings - M 306-10.  Section 6 of this standard details the Proof-Load Testing.

Almost zero permanent deformation!

"H-20" and "H-25" certification methods use 40,000 lb and 50,000 lb loads, respectively, on a 9x9 platen for 1 minute.  After releasing, permanent deformation cannot exceed 0.125 inches.  CAP's cover with a 32-inch span deformed less than 0.02 inches after a 50,000 lb load (H-25). 

CAP Has Internal Proof Load Testing Capabilities (photo)

While our certification testing is with a third-party laboratory, CAP has the capability to test in-house for development and quality inspections. 

Minimal Wear Even Against Snowplows

Paris, Maine after 2 winters.


Cincinnati, Ohio after 5 winters


Director of Utilities in Maine Happy with Winter Performance

Snowplow Resistance

Minor wear to surface, but overall integrity maintained.

Salt and Snow - No Problem

Material did not corrode or degrade.

CAP ONE - 30 Cover Resists More than 115,000 lbs!

CAP Cover shows remarkable retention of strength

“Cover shows... remarkable retention of strength”

Because of the dramatic H-25 result, CAP decided to discover where the product would reach failure. Our CAP ONE 30, with a 32 inch span, reached 116,000 lbs of force on a 9-inch x 9-inch platen.  This is like stacking more than two tractor trailers on top of each other and standing the bottom truck on one tire!

TXDOT Sends CAP Approval Letter

TXDOT Sends CAP Approval Letter

CAP Is The Only US Composite Manufacturer To Receive The Product Approval Letter by Texas Department of Transportation (TXDOT).


More Tests Results and Information Available

Request our Submission Package that contains all the information that your municipality or DOT would need for product evaluation.  

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Another Customer Testimonial!

Municipal Water District Selects Composite

Corrosion drove the Harlingen Waterworks System (HWWS) team to a composite solution.

Water District Has Problems with First Try

HWWS first tried a composite import that presented several problems.

CAP Solves Problems with Superior Design

CAP's thicker frame walls, larger flanges, thicker cover, and overall better design satisfied HWWS.

A Small Sample of Cities With CAP Covers

Harlingen, TX


San Juan, TX


Abilene, TX


Chandler, AZ


Brownsville, TX


Mesa, AZ


Fort Worth, TX


Alton, TX


Edinburg, TX


South Padre Island, TX


Corpus Christi, TX


Trinity River Authority (TRA)


Weslaco, TX


McAllen, TX


Rancho Viejo, TX


Cincinnati, OH


Guadalajara, MX


El Paso, TX


Many, many more CAPs

Since CAP began installing demonstration and production order pieces, we no longer have photos of even a small percentage of locations.  For a more detailed list of references, give us a call and we can provide it as part of our submission package.

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