. The street railway review . (25 pounds to yard) 2, 5,000-lb machine bolts & 2!-<c Placing flange rail, , and drilling 6,500 holes @ Rolls for flange S miles track laying and thorough tamping (a Sgoo 1, 3,370 cubic yards excavation track trench fe 30c 1, 1,360 cubic yards crushed stone delivered in place in trench and spread in 3-inch layers Ifi 2, 1,010 cubic yards clean sharp sand (spread cjn each layer of Sione and rolled) (fc 60c Steam roller for trench Steam roller for 3 layers of broken stone, 13,000 s
. The street railway review . (25 pounds to yard) 2, 5,000-lb machine bolts & 2!-<c Placing flange rail, , and drilling 6,500 holes @ Rolls for flange S miles track laying and thorough tamping (a Sgoo 1, 3,370 cubic yards excavation track trench fe 30c 1, 1,360 cubic yards crushed stone delivered in place in trench and spread in 3-inch layers Ifi 2, 1,010 cubic yards clean sharp sand (spread cjn each layer of Sione and rolled) (fc 60c Steam roller for trench Steam roller for 3 layers of broken stone, 13,000 square yards @ 2c Water 5,540 square yards Blake asphalt paveinent @ $ 14, S38, C. Track laid in asphalt pavement should have the most solidand substantial base. The almost impreceptible settling ofthe sand and crushed stone will crack the asphalt and event-ually destroy it. Any slight undermining of the tracks forthe excavation of service pipes, etc., would have an almost Secti. immediate effect. A concrete base would successfully hHdgesuch inequalities in many cases, and their existence mightnever be suspected. It is doubtful if this form of construc-tion would prove successful with asphalt for pavement. ESTIM.\TED COST SECTION D. .Seventy-two-pound track, cast weld joints, 60-foot raillengths, burnettized ties, sheet asphalt, concrete foundation, miles track. Rails, cast weld joints, spikes, burnettized ties, railroad cross-ings, switches, curve crossings, guard rails for curves. hauling and grading $15, 54 tons (net) steel flange guard (ri $(25 pound yard) 2, 5,000 lb machine bolts ;4 inch x 2 inches @; 2!2C Cost of rolls for steel flange Placing and bolting flange $100, drilling 6,500 holes. miles track laying and blocking up @ $ 1, 2,888 cubic yards excavation fg 30c 1,031 cubic yards concrete mixed and tamped in place 6 inches below ties and 2/i inches bet
Size: 2151px × 1161px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
