. Handbook of construction plant, its cost and efficiency. o stringers laidacross the top of the car body. Ten 1^4 in. eyebolts run upthrough these stringers and from these are suspended twoisosceles triangular wings, one on each side of the car. Thesewings are raised and lowered by means of ropes and blocks atthe point of the wings and at the top of the tower and areraised by braking the car and hauling on the line by a loco-motive. On the outside the wings are faced with iron and havea reach of 15 feet. The 45-yard side-dump cars were unloadedwhen standing still, so that the top of the dumps
. Handbook of construction plant, its cost and efficiency. o stringers laidacross the top of the car body. Ten 1^4 in. eyebolts run upthrough these stringers and from these are suspended twoisosceles triangular wings, one on each side of the car. Thesewings are raised and lowered by means of ropes and blocks atthe point of the wings and at the top of the tower and areraised by braking the car and hauling on the line by a loco-motive. On the outside the wings are faced with iron and havea reach of 15 feet. The 45-yard side-dump cars were unloadedwhen standing still, so that the top of the dumps on either sidewere from 3 to 4 feet above the tracks. In spreading this ma-terial the machine is put through the entire length at a speedfrom 7 to 10 miles per hour. Several trips with the wings atdifferent heights are sometimes necessary. The cost of spread-ing material per yard is about 1/10 cent, the cost of construct-ing machine about $, and its operation requires the serviceOf a locomotive and of four men to handle the wings. GRADING MACHINES. Fig. 144, Fresno Scraper. 340 HANDBOOK OF CONSTRUCTION PLANT
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
