. Handbook of construction plant, its cost and efficiency. ce. 20 16 Left 9 12 345 $ 20 16 Symmetric 9 12 330 20 16 3 way 9 12 510 24 16 Right , 9 12 350 24 16 Left 9 12 350 24 16 Symmetric 9 12 335 24 16 3 way 9 12 515 24 16 Right 15 30 430 24 16 Left 15 30 430 24 16 Symmetric 15 30 420 24 16 3 way 15 30 675 24 20 Right 9 12 410 24 20 Left 9 12 410 24 20 Symmetric 9 12 395 24 20 Right 15 30 550 24 20 Left 15 30 550 24 20 Symmetric 15 30 520 21V t 12 Right 8 12 225 21V s 12 Left 8 12 225
. Handbook of construction plant, its cost and efficiency. ce. 20 16 Left 9 12 345 $ 20 16 Symmetric 9 12 330 20 16 3 way 9 12 510 24 16 Right , 9 12 350 24 16 Left 9 12 350 24 16 Symmetric 9 12 335 24 16 3 way 9 12 515 24 16 Right 15 30 430 24 16 Left 15 30 430 24 16 Symmetric 15 30 420 24 16 3 way 15 30 675 24 20 Right 9 12 410 24 20 Left 9 12 410 24 20 Symmetric 9 12 395 24 20 Right 15 30 550 24 20 Left 15 30 550 24 20 Symmetric 15 30 520 21V t 12 Right 8 12 225 21V s 12 Left 8 12 225 21V s 12 Symmetric 8 12 220 21V s 12 3 way 8 12 350 21V s 16 Right 8 12 310 2iy 5 16 Left 8 12 310 21V s 16 Symmetric 8 12 300 21V i 16 3 way 8 12 460 Note.—All material for 21% gauge of track is for outsideflanged wheels. TURNTABLES. Turntables for industrial cars using rail weighing up to about20 lbs. per yard, cost from $ to $ and weigh from300 to 3,000 lbs. Their capacity ranges from 2 to 7 Fig. 242a. Standard Bail-Bearing Turntable. DEPRECIATION. Rails in general lose value from the following causes: 1. Through loss of weight due to corrosion. 2. From becoming bent and unfit for smooth operation. 3. From the weakening effect of attrition or wear. The first of these causes depends partly upon the climaticconditions and partly upon the nature of the traffic that goesover the rails. Refrigerator cars containing a large amount of RAILS AND TRACKS 529 brine are very deadly to steel rails because the brine leakingslowly upon the rail tends to keep it more or less saturatedwith a salt solution which rapidly combines with the iron toform hydrated iron oxide or rust. The second cause outlined above obtains principally on con-tractors light rail, where the rail is too light for the track andwhere the ties are spaced too far apart. If contractors wouldappreciate the fact that a rail which has been thoroughly kinkedis fit o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
