Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 445
mped out, and the level of the water in the curb should be just below thatin the surrounding sand. When the curb had reached the bottom after a de-scent of about 15 feet, the sand was allowed to settle and the opening was filledwith concrete up to a level where it could be filled with masonry. The…
Mechanical drawing
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