Coupling devices for corrugated metal pipe field joints shall meet the requirements specification 4141.
Standard Joints: - Joints for pipe not subjected to large soil movements or disjointing forces suitable for ordinary installations where simple slip type joints are typically used.
Positive Joints: - Joints for pipe, which must withstand soil movements or resist disjointing forces such as found on steep slopes, sharp curves, or under poor foundation conditions.
Approved coupling devices shall be in accordance with attached drawings and shall meet the requirements given in the attached tables for the joint type specified.
CERTIFICATION PROCEDURES
The signed mill test reports/certification shall also include a statement indicating the steel meets the requirements of IM 107, Group 2, Buy America.
The certification of compliance shall be signed by a designated or responsible company representative and shall be stated as follows:
The materials itemized in this shipment are certified to be in compliance with the applicable ASTM Standards and the Iowa Department of Transportation Standard Specifications, IMs and meet the Buy America requirements as described in IM 107 for all steel, iron products and coatings.
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Authorized Signature & Date |