. American engineer and railroad journal . of the side walls is carried outto 3 ft. 6 in. and the width of the foundation to 12 ft. i extensions for jack foundations are 8 ft. in length andlocated at the outer end of each pit on either side and at a point27 ft. from the outer end of the pit. The bottom of the pit iswell crowned and has a slope of 3 in. in its length of 6s ft. in-side, draining toward the inner circle. Here there is a castiron grating over a sump, which connects with a 4-in. cast ironpipe leading to the turntable pit. The rails are carried on 8 xi2-in. stringers bolted
. American engineer and railroad journal . of the side walls is carried outto 3 ft. 6 in. and the width of the foundation to 12 ft. i extensions for jack foundations are 8 ft. in length andlocated at the outer end of each pit on either side and at a point27 ft. from the outer end of the pit. The bottom of the pit iswell crowned and has a slope of 3 in. in its length of 6s ft. in-side, draining toward the inner circle. Here there is a castiron grating over a sump, which connects with a 4-in. cast ironpipe leading to the turntable pit. The rails are carried on 8 xi2-in. stringers bolted to the top of the concrete wall, as isshown in the cross section. A 3 x 8-in. oak strip with the upperedge beveled is spiked inside of the stringer, acting as a pro-tection for the heating pipes, which are secured along the in-side wall of the pits. The roundhouse floor is carried directlyup to the rail on either side. Eight pits in the end of the house adjacent to the machineshop are provided with drop pits. The first two tracks having. SECTION OF REINFORCED CONCRETE ROUNDHOCSE ERECTED BY THE ANI.\ RAILRO.^n -AT ORAKGEVILLE. beams, although the roof area supported continuously increases. The roof structure is concrete slabs 4I/2 in. thick reinforced by^-in. plain round rods spaced 6-in. centers across the beamsand by f^-in. shrinkage rods at about i8-in. centers parallel withthe beams. Other reinforcing is installed at the connection withthe various girders and beams. These slabs are covered withfour-ply slag roofing. The openings for the smoke jacks andventilators are formed in the slabs and eyebolts for carryingthe jacks are embedded in the concrete. The outer wall of the house is formed by a 9-inch brick fill-ing between columns D and belcw girder D. This filling is nottied to the concrete work and extends to foundation at the groundlevel. A large part of the space, however, is taken up by win-dow area, steel frames and sash being employed, which extendfrom the c
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
