. Railroad structures and estimates . 13 013 013 013 013 013 013 0 18 0 19 0 4 4 9i 5 9| 6 91 7 5 8 5 9 5111 61 2 4^ 2 8J 4 41 4 11 5 11 6 111 7 10 9 OJ 10 03 12 4i 1 n 1 n 1 V, 2 4| 3 lOJ 4 10 5 91 5 0 8 0 Lb. 6,0007,500 ,00035,00049,00073,00088,000115,000170,000 14,50023,00037,50054.(KX177,00097,000112,000 226,000 430,002 Credit for old steel spaas removed 01 - 30 ESTIMATING WEIGHTS OF STEEL TRESTLES. TABLE 20.—STEEL TRESTLES. Formula for Estimating Weight of Steel, Amount of Masonry and Piles foe Varying Conditions. 355,000 lbs. 355,000 lbs. 21)0,000 130,000 200,000. Live load (
. Railroad structures and estimates . 13 013 013 013 013 013 013 0 18 0 19 0 4 4 9i 5 9| 6 91 7 5 8 5 9 5111 61 2 4^ 2 8J 4 41 4 11 5 11 6 111 7 10 9 OJ 10 03 12 4i 1 n 1 n 1 V, 2 4| 3 lOJ 4 10 5 91 5 0 8 0 Lb. 6,0007,500 ,00035,00049,00073,00088,000115,000170,000 14,50023,00037,50054.(KX177,00097,000112,000 226,000 430,002 Credit for old steel spaas removed 01 - 30 ESTIMATING WEIGHTS OF STEEL TRESTLES. TABLE 20.—STEEL TRESTLES. Formula for Estimating Weight of Steel, Amount of Masonry and Piles foe Varying Conditions. 355,000 lbs. 355,000 lbs. 21)0,000 130,000 200,000. Live load (coopers E 50). Impact and wind as per specification. STEEL TRESTLES UP TO 125 FEET HIGH WITH 60 FT. & 45 FT. SPANS =1
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Keywords: ., bookcentury1900, bookdecade1910, bookidrailroadstructur00orrouof
