Public works . t the three principalgrades was double-tracked to permit the cars to behauled both up and down hill by the tractors thatmoved on the subgrade alongside the track and clearof it and were connected to the forward car of thetrain by a J/g-inch plow-steel cable 37 feet long, witha spliced eye at each end. This length of rope wasfound by experiment to be correct to avoid derail-ment, both 25-foot lengths and 45-foot length* caus-ing trouble because they frequently pulled the frontcars of the train off the rails. (To be continued) Heavy Increase in Construction In February last constr
Public works . t the three principalgrades was double-tracked to permit the cars to behauled both up and down hill by the tractors thatmoved on the subgrade alongside the track and clearof it and were connected to the forward car of thetrain by a J/g-inch plow-steel cable 37 feet long, witha spliced eye at each end. This length of rope wasfound by experiment to be correct to avoid derail-ment, both 25-foot lengths and 45-foot length* caus-ing trouble because they frequently pulled the frontcars of the train off the rails. (To be continued) Heavy Increase in Construction In February last construction activities in the 27northeastern states was 73 per cent, greater than oneyear ago, according to the F. W. Dodge building contracts in New York and north-ern New Jersey in February amounted to more than$59,000,000. The next largest district constructioncomes from the Central West district and amounts to$45,000,000. MARCH CONSTRUCTION WORK During March $293,636,000,000 of building con-. 258 PUBLIC WORKS Vol. 52, No. IS Heavy Loads on Highways Actual weights of heavy loads on Massachusetts roads. Many eighteento twenty-ton loads. Methods of weighing and of enforcing law limit-ing loads During the summers of 1920 and 1921 A. , inspector. Division of Highways, Massa-chusetts Department of Public Works, was em-ployed, under Commissioner John N. Cole, investi-gating heavily loaded motor trucks using theMassachusetts highways. He described his workbefore the Boston Society of Civil Engineers a fewweeks ago as follows: We started to weigh the trucks with two loado-meters. The loadometer is a device on the screw-jack principle, with an oil gage attached to give theweight. The two instruments are first placed underthe rear axle, screwed up until the wheels are off theground and the readings taken. Then this process isrep>eated with the front axle. The sum of the fourreadings gives the total weight of truck and load. In using the loadometers, I found
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmunicip, bookyear1896
