. Railway track and track work . iet & Eastern Ry., is of rectangular section, 6X7 ins., withbeveled corners. At the rail seat, the width is increased to 10 ins., and the topcorners are not beveled. The concrete is a 1:2:3 mixture, using crushed stone orslag or screened gravel; the reinforcement consists of two old boiler tubes, out-side of which is an oval wrapping of wire netting. The weight is 356 lbs.,including 35 lbs. of reinforcement. A steel tie-plate is embedded at each rail seat,and has holes at diagonally opposite corners for the legs of a U-bolt. Cast-ironrail clamps are fitted on t
. Railway track and track work . iet & Eastern Ry., is of rectangular section, 6X7 ins., withbeveled corners. At the rail seat, the width is increased to 10 ins., and the topcorners are not beveled. The concrete is a 1:2:3 mixture, using crushed stone orslag or screened gravel; the reinforcement consists of two old boiler tubes, out-side of which is an oval wrapping of wire netting. The weight is 356 lbs.,including 35 lbs. of reinforcement. A steel tie-plate is embedded at each rail seat,and has holes at diagonally opposite corners for the legs of a U-bolt. Cast-ironrail clamps are fitted on the threaded ends. The Kimball tie, Fig. 29, triedon the Chicago & Alton Ry., has two concrete blocks 7X9X36 ins., 2 ftapart, connected by a pair of 3-in. steel channels 8 ft. long and 2 ins. the channels are spacing pieces into which are screwed bolts holdinghard-wood blocks 3X9X18 ins. Each block has two f-in. holes for the spikes,and elm plugs embedded in the concrete receive the points of the spikes. The. -* Illbet. Blocks >k— Half Side Elevation. «■ g- .» Cross Section.
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