. Electric railway journal . nd the side sills are 7-in. x 3j4-in. x 7/16-in. angles. No intermediate longitudinal sills aroused. Thebolsters are cast steel and the end sills are pressed in channelsection out of 3/16-in. plate. Between the bolsters are fourbody transoms made of 5-in. x Y%-. plates, one passing overand one under the center sills, and both being securely rivetedto the angle side sills. These members serve to transmit theprincipal weight of the flooring between bolsters to the sideframes. The side sills and center sills are further tied togetherby bridging pieces 5 in. deep press
. Electric railway journal . nd the side sills are 7-in. x 3j4-in. x 7/16-in. angles. No intermediate longitudinal sills aroused. Thebolsters are cast steel and the end sills are pressed in channelsection out of 3/16-in. plate. Between the bolsters are fourbody transoms made of 5-in. x Y%-. plates, one passing overand one under the center sills, and both being securely rivetedto the angle side sills. These members serve to transmit theprincipal weight of the flooring between bolsters to the sideframes. The side sills and center sills are further tied togetherby bridging pieces 5 in. deep pressed to channel section from3/16-in. plate. These pieces are inserted between the sills atintervals of 3 ft. 7 in., and they carry the light Z-bar longitudi-nals which support the corrugated steel floor plates. The clearspace of 2 in. below the bridging pieces facilitated the installa-tion of piping and conduits. The floor is composed of Keystonecorrugated plates, on which a layer of Flexolite compositionflooring is Southern Pacific Electrification—Interior of Steel CarShowing Two and Three-Passenger Cross Seats SIDES AND ROOF The sides of the car below the windows form plate girders3 ft. deep, and they are depended upon to carry most of theload between bolsters. The belt rail under the windows is com-posed of a ^j-in. x 4-in. flat plate on the outside and a 2-in. x2-in. x Y^-m. angle on the inside between the posts. The postswere pressed out of 1/16-in. steel plates and were subjected tothe sherardizing process before being put in place in order toprevent corrosion. An angle 4 in. x 3^2 in. x 5/16 in. rests ontop of the posts and forms the side plate. On the outside of thisangle is riveted a J^-in. x 125^-in. letter-board plate, which islapped 2 in. by the bottom edges of the roof sheets. The roof is arched on a flat curve and is supported by car-lines pressed from 1/16-in. steel plates which rest on side plateangles directly over the side posts. The roof sheets also
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