Public works . ed from the plant by 2-ton motor trucks,as needed. In the resurfacing, the old surface is firstswept clean and then spread with a mixture of asphalticcement and naphtha, the proportions being about halfand half. Wearing surface is then applied and rolled. Very few men are required for the excavating andgrading work. A No. 6 Keystone grader, equipped with ahalf-yard scoop, is used to bring the street to rough gradeand section. The average excavation is in the neighbor-hood of 8 inches. The usual amount of excavation perday is from 150 to 180 cubic yards. This is hauled byteams an
Public works . ed from the plant by 2-ton motor trucks,as needed. In the resurfacing, the old surface is firstswept clean and then spread with a mixture of asphalticcement and naphtha, the proportions being about halfand half. Wearing surface is then applied and rolled. Very few men are required for the excavating andgrading work. A No. 6 Keystone grader, equipped with ahalf-yard scoop, is used to bring the street to rough gradeand section. The average excavation is in the neighbor-hood of 8 inches. The usual amount of excavation perday is from 150 to 180 cubic yards. This is hauled byteams and trucks, and is being used by the city for sur-facing other streets. This old macadam material is un- At the right is shown theoil-burning asphalt plant usedon this contract, having acapacity of about 800 squareyards of pavement a day. ItIs located near the center ofthe city. Below is the grader usedfor rough-grading the streetsan average depth of about«ight inches. It is removing160 to ISO cubic yards a Below is shown the type oftruck used tor hauling bothasphalt and concrete. Theunusual feature of these lathe use of pneumatic tires—40x8 rear and 37x6 front. Inthe light, sandy soil of thissection, these tires compactthe sub-grade instead of cut-ting into it. Also the con-tractor finds the truck wearand breakage less and thespeed greater than with solidtires.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmunicip, bookyear1896
