Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 618
that the machine will do the work of fiveor six men. The standard machine will strike in a trench from1 to 4% ft. wide from 6 ft. in depth to the surface. Length ofstroke, 2 ft.; weight of tamper, 85 lbs.; size of head, 8x9; 1H. P. gasoline engine consuming iy2 gallons of gasoline in tenhours;… … Fig. 293. Chicago and Keller Rammers at Work on Sewer Covers. construction and the large amount of work they will accomplishare being rapidly adopted. Owing to their lessening the manualefforts of the moulder, they enable him to accomplish from fourto twelve times as much work as under old hand…
Contractors' operations · Building
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