. Railroad structures and estimates . le oftruss. Heightof truss. No. ofpanels. Total dead and liveload per ft. ofspan. Timber, Wrought Cast imate cost erected. ft. B. M. iron. iron. Ft. Ft. Lbs. Lbs. 30 Pony 9 4 6000 10,200 2,200 S550 40 Pony 11 4 5500 13,400 1,300 740 50 Pony 11 6 5200 19,100 5,700 2,900 1170 60 Pony 12 6 4900 22,800 3,700 1410 70 Pony 13 7 4800 30,000 17,500 8,300 2480 80 Pony 14 8 4800 35,400 22,000 10,000 ,3010 90 Pony 15 9 4800 42,800 28,700 12,600 3890 90 Through 25 8 4800 41,900 33,100 13,300 4020 100 Tlirough 25 9 4800 48,900 41,600 14,300 4S10 110 T
. Railroad structures and estimates . le oftruss. Heightof truss. No. ofpanels. Total dead and liveload per ft. ofspan. Timber, Wrought Cast imate cost erected. ft. B. M. iron. iron. Ft. Ft. Lbs. Lbs. 30 Pony 9 4 6000 10,200 2,200 S550 40 Pony 11 4 5500 13,400 1,300 740 50 Pony 11 6 5200 19,100 5,700 2,900 1170 60 Pony 12 6 4900 22,800 3,700 1410 70 Pony 13 7 4800 30,000 17,500 8,300 2480 80 Pony 14 8 4800 35,400 22,000 10,000 ,3010 90 Pony 15 9 4800 42,800 28,700 12,600 3890 90 Through 25 8 4800 41,900 33,100 13,300 4020 100 Tlirough 25 9 4800 48,900 41,600 14,300 4S10 110 Through 25 10 4800 54,800 48,200 10,(XX) 5290 120 Througli 25 11 4800 02,100 18,300 G^m 130 Througli 25 12 4700 67,300 20,900 7320 140 Through 25 13 4700 78,200 73,900 23,300 8100 150 Through 25 14 4700 86,700 87,300 27,100 9330 Prices itssumed: Timber, $35 per M. , 4 cts. per pound erected. Supervision and contingencies, 10%. H. M. erecte*!; .steel, 5 cts. per pound erected; caat i; S|>nic» Xttth-^ risrV IV :. 17 ; c to c. >,f Tru!!c«CENTER END SECTION ELEVATION
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Keywords: ., bookcentury1900, bookdecade1910, bookidrailroadstructur00orrouof
