Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 645
. of 36-in. brick sewer, about 2,200 ft. of 30-in. brick sewer andsome 17,000 ft. of 15 and 18-in. pipe sewer. The depth of thesesewers below natural ground surface is an average of 14 ft.The soil consists of black loam overlying yellow and blue clay,the clay being stiff enough to stand well with… … Fig. 302. View of Austin No. 1 Trench Machine Digging a 15-ft.Trench 42 Inches Wide. Austin Trench Excavator fitted with buckets cutting to a widthof 42 inches. The work at present is on the 36-in. circular sewer, which con-sists of a two-ring invert and a single ring arch. Following themachine the…
Contractors' operations · Building
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