OTL-STORAGE HOUSES.

89

Above this oil-vault is a dumping-room for discharging oil from barrels through traps in the floor intothe tanks in the basement. The floor in this room is 4 ft. 3 in. above the yard level, or 5 ft. 9 in.above the basement floor. The oil-vault is entered through a 5-ft. door at the end of the house, withsteps leading down to it on the outside of the building. The side of the dumping-room next to theoil-room is closed by a brick wall, and the end of the room is closed by galvanized corrugated ironon studding. The front and rear of the dumping-room are closed by sliding-doors, covered by gal-vanized sheet-iron, so that barrels can be received or delivered from or to cars or the yard. Next tothe oil-vault there is an oil-room, 9 ft. 6 in. Xu ft., for drawing the oil. The floor of this room is13I- in. lower than the floor of the oil-vault. Pipes lead from the six tanks in the oil-vault to the oil-room, so arranged that the oil runs by gravity. The ends of these pipes are closed by faucets, andoil is drawn into cans or buckets, as required. There is a.gauge-glass in the oil-room for each pipe,so that the height of the oil in each tank can be seen in the oil-room. The oil-vault and the oil roomare connected by a small iron door. The oil-room is reached from a door on the front of the housewith steps leading down to the floor of the room inside of the house. Back of the oil-room is a wasteand tallow room, 6 ft. X 9 ft. 6 in. The oil-vault and tallow-room are vaulted over with flat brickarches carried by I-beams. The floors are made of cement.

The foundations of the building are stone walls, 18 in. thick. The side walls are brick, 12 in.thick. The roof-trusses consist of 4-in. X 6-in. tie-beams ; 4-in. X 6-in. principal rafters ; 3-in X 4-in. struts ; f-in. diameter king-rod; and 3-in. X 5-in. purlins. The entrance-door to the oil-vault is5 ft. wide X 4 ft. 8 in. high. The door between the oil-vault and the oil-room and the door leadinginto the tallow-room from the oil-room are 2 ft. 5 in. wide X 5 ft. high. The window over the waste-room, which serves to light up the oil-room, is 3 ft. 5 in. X 6 ft. 2 in.

The balance of the building, that is used as a sand-house, is described in the chapter on sand-houses, and illustrated in Figs. 185 to 188.

Brick Oil-house at Jersey City , JV. J., Pennsylvania Railroad. —The oil and waste storage-houseof the Pennsylvania Railroad at Jersey City , N. J. , shown in Figs. 205 to 209, is a brick building,53 ft. X 20 ft., with wooden roof covered with slate. The interior is divided by brick partition-wallsinto a lamp-room, 10 ft. X 18 ft.; a waste-room, 10 ft. X 18 ft.; an oil-room for drawing the oil,14 ft. 4 in. X 18 ft.; and an oil-platform or discharging-room, 15 ft. X 18 ft., with an oil-vault of thesame size below it. The floor of the oil-vault is 18 in. below the yard level, and the floor of the oil-room is 13J- in. lower than the floor of the oil-vault. The floors of the waste and lamp rooms are atthe yard level. The floor of the discharging-room over the oil-vault is 4 ft. 6 in. above the yard level.There are six tanks in the oil-vault, which are filled with oil from barrels through traps in the floor ofthe oil-discharging room. The oil-vault is entered through a wide door in the end of the building,with steps leading down to it on the outside of tlie building. A small iron door connects the oil-vaultwith the oil-room. Separate pipes lead from each tank in the oil-vault to the oil-room, where faucets,glass gauge-tubes, and drip-boxes are provided, the same as shown in Figs. 202 and 204 for the oil-house of the same railroad at Washington, D. C. The oil-room is entered by a door on the front ofthe house, with steps leading down inside of the house. The end of the oil-discharging room is closedby galvanized corrugated iron on studding, while the front and rear of the room are closed by sliding-doors, hung on different rails so as to slide past each other. Barrels are handled through these doorsto or from cars or the yard.

The foundations of the building are stone walls 18 in. thick. The side walls are brick, 12 in.thick. The partition walls are brick, 8 in. thick. The roof-purlins are 3 in. X 8 in., covered withi-in. boards and slates. The corner and door posts of the framed sides of the oil-discharging roomare 6 in. X 6 in., and the studs 3 in. X 6 in. The oil-vault is vaulted with 4-in. flat brick archesresting on iron I-beams and cast-iron columns at the centre of the room. All the floors throughoutthe building are made.of cement. The entrance door to the oil-vault is 5 ft. 6 in. wide X 4 ft. 6 in.high. The doors leading into the oil, waste, and lamp rooms are 3 ft. 6 in. X 7 ft. 9 in., with transom-lights overhead. The windows have two sash, each 6 lights 12 in. X 12 in. The window-sills on theoutside of the building and the window aprons on the inside of the window are of cast-iron. Thedoor and window lintels consist of three pieces of oak, each 4 in. X Sin. Ventilation is secured over