Authors: Greg Orme
Ecydt2122c Hypothesis A and B show how the dam wall is degrading , A at 8 o’cl ock is in good condition, at 5 and 7 o’clock the cement edge of the dam wall has been undermined perhaps from water overflows in the past. B shows a double wall from 2 to 7 o’clock as if the central dam wall has eroded away or fallen off. The wall may have been full of gravel with an inner and outer skin of cement , when the top breaks then the gravel would fall out leaving a hollow . At 7 and 8 o’clock first and second legs there is an undermining of the wall .
Comments: 33 Pages.
[v1] 2018-10-11 23:06:43
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