International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage
2472. Foundation gallery : A gallery provided in the dam body for access to the foundations for inspection and/or drainage for percolated water from the upstream face or seepage through the dam. Generally it is provided along the length of the dam near the rock-surfaces and conforming to the elevations in the transverse profile of the canyon, located near the axis of the dam in parallel. The foundation gallery allows drilling of holes to enable grouting of foundation or to capture percolated/seeped water. | ||
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