Iron Covers fusing shut convince the city to go to composites.
In a comprehensive review of four different composite options, Chandler engineers reveal quality differences.
CAP covers were chosen among all the composites presented and continue to satisfy Chandler today.
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.
"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).
While our certification testing is with a third-party laboratory, CAP has the capability to test in-house for development and quality inspections.
Minor wear to surface, but overall integrity maintained.
Material did not corrode or degrade.
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!
CAP Is The Only US Composite Manufacturer To Receive The Product Approval Letter by Texas Department of Transportation (TXDOT).
Corrosion drove the Harlingen Waterworks System (HWWS) team to a composite solution.
HWWS first tried a composite import that presented several problems.
CAP's thicker frame walls, larger flanges, thicker cover, and overall better design satisfied HWWS.
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.