. Railroad structures and estimates . Pits. C. d A. — Two engine inspection pits, built bythe Chicago &: Alton at Glen, 111., are shown on Fig. 245. Thepits are located just west of the coal chute, are 75 ft. longand are built of concrete. A concrete stairway at the center of INSPECTION PITS. 52a. PM d o .2 oPi CO• 1—( =, ,._4----iiJ! 530 ASH PITS. the east pit leads down to a tunnel reacKing both pits, passingunder an intermediate track to connect with the pit on the to the pits is secured by short ladders leading from thetunnel. The approximate cost of the pits complete is about
. Railroad structures and estimates . Pits. C. d A. — Two engine inspection pits, built bythe Chicago &: Alton at Glen, 111., are shown on Fig. 245. Thepits are located just west of the coal chute, are 75 ft. longand are built of concrete. A concrete stairway at the center of INSPECTION PITS. 52a. PM d o .2 oPi CO• 1—( =, ,._4----iiJ! 530 ASH PITS. the east pit leads down to a tunnel reacKing both pits, passingunder an intermediate track to connect with the pit on the to the pits is secured by short ladders leading from thetunnel. The approximate cost of the pits complete is about SI500. Inspection Pits, C. P. R. -— A double pit as built by the C. P. shown, Fig. 246. The walls and floor are of concrete with12 X 16 wall plates to carry the rails. The entrance stair-way is located at one end midway between the pits. The costof an 80-ft. double track pit including ordinary drainage isestimated at S1200. Ash Pits. — Ash pits are required at divisional .and otherpoints so that ash pans of locomotives can be cleaned out. The pits are usually placed convenient to the coal and watersuppl}^, and within easy reach of the turntable. The time required to clean a locomotive ash pan is fromtwent} to sixty minutes, depending on weather and other condi-tions, hence the
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