. Railway maintenance engineering, with notes on construction . ^ Engineering Association,* * Manual, 1911, p. 86,192. TRACK AND RIGHT OF WAY 193 TABLE X Temperature Expansion for Laying 33 Ft. Rails (Am. Ry. Eng. Assn.) Temperature(taken on rail)(Fahrenheit). ■ Opening betweenrails. -20° to 0° 0 to 25 25 to 50 50 to 75 75 to 100 A in. iin. A in. in. Over 100° the rails should be laid close without bumping. The procedure on new track is quite different; here if the workis of any magnitude a track-laying machine is generally consists of a flat car equipped with beams extending a
. Railway maintenance engineering, with notes on construction . ^ Engineering Association,* * Manual, 1911, p. 86,192. TRACK AND RIGHT OF WAY 193 TABLE X Temperature Expansion for Laying 33 Ft. Rails (Am. Ry. Eng. Assn.) Temperature(taken on rail)(Fahrenheit). ■ Opening betweenrails. -20° to 0° 0 to 25 25 to 50 50 to 75 75 to 100 A in. iin. A in. in. Over 100° the rails should be laid close without bumping. The procedure on new track is quite different; here if the workis of any magnitude a track-laying machine is generally consists of a flat car equipped with beams extending aheadof the car upon which a small dummy car containing ties may berun and dumped. These ties are spaced by the track-laying gangand two rails are dropped in place from the beams ahead of thecar. These are connected up and spiked to the ties and thewhole train moves ahead one rail length and the operation isrepeated. Where the country is flat and the line is accessible to teamsthe ties may be distributed on the grade by teams and the railsand other track material brought up by train. In this case atrack-layin
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