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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.