DEVELOPER (OR CONTRACTOR) shall perform the Mandrel Test prior to the Air Test unless otherwise approved by a District Inspector for reason. The Mandrel Test and the Air Test shall be performed in the same general timeframe. Water lines shall be installed prior to test.
DEVELOPER (OR CONTRACTOR) shall provide all necessary equipment to perform the testing including, but not limited to, a mandrel with its proving ring and string.
The test shall be conducted in the presence of a District Inspector. Sewer lines shall be tested no sooner than thirty (30) days after completion of installation.
The Mandrel shall be a rigid device, cylindrical in shape and constructed with nine (9) or ten (10) evenly spaced arms or prongs that will pass through a five percent (5%) or less deflection of the base inside diameter of the pipe.
The sewer lines shall be pre-strung with the string intended to pull the mandrel to allow for a faster test.
The DEVELOPER (OR CONTRACTOR) shall uncover and repair all failed lines. Failed lines must be re-inspected by a District Inspector until such time as the lines pass.
