. Water & sewage works . perience. The plant,while under the direct charge of Mr. Proc-tor, also has a superintendent, thorolyfamiliar with the business, who receives asalary of $1,800 per year. The superin-tendent, time-keeper and book-keeper arethe only people retained during the wholeyear, the rest of the labor, as stated above,being confined to the paving season. After the mixture has been produced atthe plant it is drawn to the streets in fortycanvas-covered wagons, hauling two and ahalf cubic yards each. These wagons cost$ each, f. o. b. Detroit. During thepast year, two five-ton a
. Water & sewage works . perience. The plant,while under the direct charge of Mr. Proc-tor, also has a superintendent, thorolyfamiliar with the business, who receives asalary of $1,800 per year. The superin-tendent, time-keeper and book-keeper arethe only people retained during the wholeyear, the rest of the labor, as stated above,being confined to the paving season. After the mixture has been produced atthe plant it is drawn to the streets in fortycanvas-covered wagons, hauling two and ahalf cubic yards each. These wagons cost$ each, f. o. b. Detroit. During thepast year, two five-ton asphalt trucks havebeen added to the equipment. These truckswere made by the General Motors Co. andcost $4, each. As has been the general experience thru-out the country where trucks are used,they have proved of exceptional value forlong hauls and have materially reducedhauling charges. Previous to the installa-tion of the trucks, it took from two tothree hours to make the long hauls, which 436 MUNICIPAL ENGINEERING. DETROIT nunncipal asphalt plant fur-nished by Hetherington d- Bernerand operated by the Detroit MunicipalAsphalt Maintenance Department. tt] are now made by the trucks in fromtwenty to thirty minutes. The short haulsare still made by wagons, which for suchhauls have been found to be more econom-ical than trucks. The total capacity of the Detroit munici-pal plant of today is between 2,500 and3,000 square yards of finished work perday, the finished pavements consisting of114 inches of binder and 2 inches of wear-ing surface. The city will lay between300,000 and 400,000 square yards of workper year, of which about 25,000 squareyards is repair work, including cuts madeby the public service corporations. Dur-ing the present year it is estimated thefollowing quantities of materials will beused: Asphalt 4,000 tons. Asphalt sand (fortop) 25,000 cu. yds. Limestone (for binder)... 12,000 cu. dust (for filler). 2,500 tons. The cost of these materials f. o.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsewerage, bookyear191
