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interior u f the building, and covered with a tarred gravel roof. The outsjide diameter of the house is256 ft., the inner diameter is 120 ft., and the diameter of the turn-table is 60 ft. The width of thehouse is, therefore, 68 ft., and the space between the turn-table and the inner circle of the house is 30ft. The angle of the stalls is 12 degrees. The panel length on the inner circle is 12 ft. 6 in., and onthe outer circle 26 ft. 7 in. The clear height from the top of the rail to the roof girder at the innerwall is 18 ft.
The foundations of the wall are of stone, 2 ft. thick, capped at the ground level with an 8-in.stone coping. The outer wall is of brick, 13 in. thick, panelled on the outside, and with pilasters atthe angles on the inside and outside of the wall, the thickness of the wall at the pilasters being 26 in.
Fig. 337. —End Elevation.
There are two windows in each panel of the outside wall, each window having 24 lights, 12 in. X 18in. The inner front consists of cast-iron columns between the doors, the door-opening being spannedby a cast-iron lintel. The door-opening is 11 ft. 5 in. wide in the clear and 16 ft. 3^ in. high in theclear. The doors are square-top, panelled and glazed, as shown, and swing inwardly.
The roof is a single-pitched roof on a slope of 1 in 12, the highest point being at the outer wall.The roof-girders are supported inside the house by two 10-in. X 10-in. timber posts, with cast-iron bed-plates resting on 12-in. stone pedestals, with a stone foundation 4 ft. 9 in. square. The girders aretwo pieces, respectively, 6 in. X 16 in., 7 in. X16 in., and 8 in. X16 in., for the three spans startingfrom the inner wall to the outside of the building. The purlins are 2 in. X 12 in., and 3 in. X 12in., spaced to suit the span. The roof is covered with |-in. boards and a tarred gravelled roofing-felt.
The engine-pits are 52 ft. 8 in. long by 3 ft. 10 in. wide in the clear, and from 2 ft. 8 in. to 3 ft.2 in. deep below the top of the rail. The pits are built with a convex bottom, so as to throw thewater toward each side wall. The top of the walls is covered with a 12-in. X 12-in. wall-plate towhich the rail is spiked, the top of the rail being level with the floor of the house. The drainage ofthe pits is excellent, consisting of an opening at the lower end leading directly into a stone box-sewer33 in. wide, with a concave concrete bottom and covered with the floor-timbers, making the sewerthus easily accessible for cleaning out and repairs. The flooring in the house consists of 2-in. planklaid on mud-sills.
The ventilation is effected at the high end of the roof next to the outer wall by a 3-ft. 4-in.round sheet-iron ventilator in the roof over each stall. There is also a smoke-stack with a movablebell-shaped lower piece hung in the roof, the centre of the stack being 14 ft. 4 in. from the inner faceof the outer wall. The rain-water is carried down from the roof at every fourth column of the innercircle through a 4-in. round down-conductor to the box-drain inside of the house.
Engine-house at Waycross, Ga. , Savannah , Florida <S° Western Railway. —The engine-house ofthe Savannah , Florida & Western Railway at Waycross, Ga. , shown in Fig. 338, designed by Mr.W. B. W. Howe, Jr., Chief Engineer, S., F. & W. Ry., is a segment of a frame roundhouse witha low single-pitched flat roof covered with tarred roofing-fe't. The outside diameter is about 276ft., the inner diameter is about 138 ft , and the diameter of the turn-table is 54 ft. The width of thehouse is, therefore, 69 ft., and the space between the turn-table and the inner circle of the house is42 ft. The clear height of the door-opening is 17 ft. above the top of rail.