Engineering and Contracting . a profit of $3, on the pavement proper, but the tabu-lation fails to include his overhead charges,depreciation of plaint, interest on investment Fcbniarv 18. 191-1. Engineering and Contracting 209 and incidentals. As the overhead charges ofthe county amounted to $1,300, the contractor,whose charges must have been much greater,probably lost money. For excavation, overhaul and shaping hereceived $2, and it cost him $2,, aloss of $ His hauling cost was high,amounting to per cent of the total. Thereis a big difference shown in the cost o
Engineering and Contracting . a profit of $3, on the pavement proper, but the tabu-lation fails to include his overhead charges,depreciation of plaint, interest on investment Fcbniarv 18. 191-1. Engineering and Contracting 209 and incidentals. As the overhead charges ofthe county amounted to $1,300, the contractor,whose charges must have been much greater,probably lost money. For excavation, overhaul and shaping hereceived $2, and it cost him $2,, aloss of $ His hauling cost was high,amounting to per cent of the total. Thereis a big difference shown in the cost of haul-ing sand and screened gravel, the formercosting cts. per cubic yard, and the latter Some Service Records of Bituminous Wearing Surfaces on Concrete Pavement. Service records of bituminous wearing sur-faces on concrete pavement are scarce and en-gineers will read with interest the followingnotes of conditions found by an examinationof the bituminous surfaced concrete pave-ments of Grand Haven, Mich. These notes are. Fig. 4. P\ov/g Earth Base with a Gang Rooter, Preparatory to Tamping, Huntington Drive, Near Alhambra, Calif. cts. Some difference would be expected,but an increase of 70 per cent is unusual. If this road wears well, and if the surfac-ing sticks, many more miles of this type ofpavement will be constructed, not only in LosAngeles County, but throughout the thing is certain, however, the contractorswill not again bid so low. TABLE POST TO COrNTY FOR OF CONCRETE PAVEMENTWITH BITUMINOUS WEARING DRIVE, DIVISION 37, SEC. to Contractor. Unit Per Item - price. Amount, sq. yd- Excavafn. cu. $ % 1, $ Overhaul, 9,546 sta. Shaping roadbed. 12,643lln. ft 1, Concrete pavement, 28,280«q. yds Total paid to contractor for pavem*^nt proper $16, $ Mnteiials Furnished hy County. Unit Per Item— price. Amount, s
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