CORRUGATED POLYETHYLENE TUBING
Corrugated polyethylene (PE) tubing, couplings, and fittings for subsurface drainage shall meet the requirements of Section 4143.01B of the Standard Specifications of the Iowa Department of Transportation.
Corrugated Polyethylene Tubing utilized on federally funded projects shall be manufactured in the USA and marked as such.
Application for plant approval shall be made to the Construction and Materials Bureau in Ames and shall include product technical information and a description of product quality control procedures.
Initial approval will be based on the review of the information in the application. A current report of successful AASHTO Product Evaluation & Audit Solutions plant audit will be used for plant approval. Continued plant approval requires facility submission into the AASHTO Product Evaluation & Audit Solutions THP audit work plan and successful yearly audits.
Approved plants for corrugated PE tubing and fittings used for subsurface drainage are listed in Appendix A.
Acceptance shall be on the basis of approved plants locations
listed in the Materials Approved Products Listing Enterprise (MAPLE) and IM
107 certification of compliance.
Sampling and testing at the project site will be based on requests from the Central Construction and Materials Bureau. Samples shall contain the date and plant code.
Department monitor test samples at the plant location will be at the discretion of the District Materials Engineer and / or the Construction and Materials Bureau. Deficient test results or poor workmanship on any monitor sample may be considered sufficient cause for removing a plant from the list of approved plants.