Sampling test for quality control during placement of water stop material
CONTAINMENT SHELLS
Placement of water stop material
Branch pipes to collect sample for quality control test during grouting and material storage facility
Simulated portion of vent header for testing device (when water leaks)
Inflatable bag expanding around the interference, and water leaking from the gap, as viewed from vent header.
Close view of simulated portion of vent header for testing device (tanks for storage and measurement of water leakage)
Simulated portion of vent header for testing device (tanks for storage and measurement of water leakage)