Handbook of construction plant, its cost and efficiency (1918)
Dana, Richard Turner, 1876-1928 · New York, McGraw-Hill book company, inc., [etc., etc.] · leaf 639
634 TRENCHING MACHINES 635 and jointed inside the shield, which meanwhile acts as a tempo-rary cofferdam. Only general fig-ures are available on the cost of this work.Mr. Hall states that for depths of 10 ft. and less the cost has … L-^c/Zam o/ /kg/jc/^ Fig. 299B. Sketch Showing Ejector and Method of Pumping Watetfrom Sewer Trench. varied so much owing to local conditions, differences in material^etc., that it is impossible to get at average costs. He statesthat the cost of excavating 42-in. sewer from 17 to 20 ft. deepJias…
Contractors' operations · Building
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