. Guide leaflet. Uiiiilliiitt NEW PIERS FOR GIANT SHIPS 169. ^ Fairchild Aerial Surveys, Inc. VIEW OF PIERS 88, 90 AND 92, NORTH RIVER, NEW YORK, MAY 17, 1933Pile part of piers, in river, outside cofferdam; rock portions of piers and excavations for slips, within a15-acre enclosure. Photograph supplied by Allen N. Spooner and Son, contractors prised 648,000 cubic yards, 508,000 cubicyards of rock, and 140,000 cubic yards ofearth overburden. The methods usedhave been described in the August 3,1933, issue of the Engineering NewsRecord. It was accomplished by using anumber of air compressors, a l
. Guide leaflet. Uiiiilliiitt NEW PIERS FOR GIANT SHIPS 169. ^ Fairchild Aerial Surveys, Inc. VIEW OF PIERS 88, 90 AND 92, NORTH RIVER, NEW YORK, MAY 17, 1933Pile part of piers, in river, outside cofferdam; rock portions of piers and excavations for slips, within a15-acre enclosure. Photograph supplied by Allen N. Spooner and Son, contractors prised 648,000 cubic yards, 508,000 cubicyards of rock, and 140,000 cubic yards ofearth overburden. The methods usedhave been described in the August 3,1933, issue of the Engineering NewsRecord. It was accomplished by using anumber of air compressors, a largenumber of drilhng machines, a fleet of30 ten-ton trucks, and a large force ofmen who worked day and night in threeshifts of eight hours each, except frommidnight Saturday to midnight the pier and bulkhead walls therock was line drilled to a depth of 46 feetwith drill holes about 12 inches apart fora distance of about 2900 feet. Betweenthese deep holes intermediate holes weredrilled to a depth of 15 feet. The Jack-hammer drill was the princ
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
