. Engineering and Contracting . with it even if the wagon is not backed upto the pole, but instead parallel with it as it lies on theground, an important point in a large city with narrow-streets carrying a heavy traffic which would be blocked if thowagon had to be backed up at right angles to the curb the pole is ready to be raised the rope attached to it and running the blocks is pulled by either the teamof horses previously harnessed to the pole raising wagon oranother team which has been hauling another wagon usedby the same gang. This latter plan makes it unnecessaryto
. Engineering and Contracting . with it even if the wagon is not backed upto the pole, but instead parallel with it as it lies on theground, an important point in a large city with narrow-streets carrying a heavy traffic which would be blocked if thowagon had to be backed up at right angles to the curb the pole is ready to be raised the rope attached to it and running the blocks is pulled by either the teamof horses previously harnessed to the pole raising wagon oranother team which has been hauling another wagon usedby the same gang. This latter plan makes it unnecessaryto unhitch the team from the pole raising wagon and so savestime in moving from one hole to the next as the horses arealways ready to move the wagon. Method and Cost of ThawingGround by Steam Coils In order to expedite the construction of an aircraft storagebuilding at o5th street. New York City, it was necessary todevise an elTective method of thawing the ground within thebuilding so that concreting could proceed. The ground had. Layout of Piping for Thawing Frozen Ground at Navy Yard,New Yorl<. been frozen to an average depth of some 37 in. as a result ofthe exceedingly cold \veather that commenced the last week inDecember, 1917. As soon as the building was roofed and thesash glazed, an attempt was made to thaw the ground by thesteam point method. This method proving somewhat inefteo-five, another plan was suggested by Richard T. Dana, thesupervising engineer for the government. This method is de-scribed by .Air. Dana in Public Works of the Navy, from whichthe matter following is taken: The method proposed and adopted was as follows; thethermal facts and general method were devised by the super-vising engineer, and the excellent and most convenient ar-rangement of pipes was suggested by the Austin Co., with theapproval of the supervising engineer: Six units of area for thawing were arranged, each unit con-sisting of 13 lengths of %-in. pipe 20 ft. long. Each of thosix units o
Size: 2114px × 1182px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
