Acceptable Repair Methods
|Corrugated PVC Pipe||1. Small breaks or punctures on the pipe wall||External Repairs:|
|1. Cementing a patch or repair piece over small breaks or punctures in the pipe. Pieces are typically pipe saddles from the pipe manufacturer. The repairs are made by: |
a. Cleaning the affected area with a suitable solvent.
b. Cementing the repair piece in place using a heavy bodied urethane adhesive. this requires a heavy, continuous bead of adhesive completely around the damaged area and through the full depth of the corrugations.
c. Cleaning away excessive adhesive.
|2. Repair Couplings and Bands used in accordance with the pipe manufacturers specifications.|
|3. Concrete collars in accordance with Index 430-001 of the Department's Design Standards.|
|4. Pressure injection of an acceptable chemical grout.|
|1. Mechanical Repair Sleeve|
|2. Leaking Joints||Internal Repairs:|
|1. Pressure injection of an acceptable flexible chemical grout.|
|2. Internal Joint seals|
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