Photos 1001.01.167
Drain outlet
Detail of DTR09PH77--1001.01.166 showing exterior view (outlet) of partially excavated exterior aperture of drain tunnel. The bedrock floor of the drain tunnel was evident under the pool of water in the masonry opening at a depth [“invert”] of approximately 18 inches below the sill elevation, the same level as the bedrock encountered at the base of the ex
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