The supply of hot and cold water to all parts of the building is controlled entirely from the distribution drums in the cellar, shown in Fig. 5- They are of galvanized steel, about 5 feet long; v is for hot water under tank pressure, and b and c for cold water under tank and street pressure respectively. Tank water is received through the 4-inch pipe n and its 2-inch branch o. Water under street pressure is received through a 2-inch branch q from a 4 inch pipe/ to the suction tank C, Fig. 2. Live or exhaust steam is delivered through a ¾ - inch pipe I to the 2½ - inch pipe a, and, after heating the water in the drum v, escapes through a ½ - inch pipe s.

The pipe A is a hot-water 1-inch supply to two slopsinks, and B is a 1½ - inch supply to all other slopsinks. C and D are 1- inch supply pipes to the president's and directors'rooms. F is a ¾ - inch. and E and G are ½-inch hot-water return-circulation pipes from the tops of the lines B, C, and D, and connect above its valve with the sediment pipe m of the drum v. The pipes H, J, K, and L are 1-inch tank cold-water supplies to different lines of washbasins. M is a 1½- inch supply pipe to a group of washbasins and urinals, N is a 1½ - inch supply pipe to a group of basins, urinals, and slopsinks, and O, P, Q, and R are 1-inch supply pipes to lines of washbasins. S is a 1-inch supply pipe to the directors' room. T is a 1-inch supply pipe to the president's room. U is a1½ inch cold-water supply pipe under street pressure to a basement toilet-room, and V is a 1-inch supply pipe to the same. W is a 1½-inch supply to another basement toilet-room. Y is a 1½ - inch supply pipe to the elevator tank. Z and d are 1-inch supply pipes to the front and rear cellar sinks; j is a 1½ -inch by-pass connecting the drums b and c, the valve (k) of which is usually closed to keep the two systems separate, but may be opened to admit tank water to the drum c if the street water is turned off. The lines of pipe, W and U, are generally supplied by street pressure, the valves w and a being open and the valves x and y closed. By reversing these valves, however, the supply is under tank pressure.

All the rising lines may be emptied through their valves i'i, etc. into the drip pipe g g that discharges into the trap of a 5-inch rainwater leader z. The drums v, b, and c may also be emptied by branches m m m, through the pipe g; 11, etc. are pipe legs supporting the drums; //, etc. are pipe hangers supporting the horizontal lines from the iron floor beams; p is the 4-inch pump delivery pipe to the roof tank.

Figure 6 shows the method of supporting stacks of cast-iron pipes from the iron floor beams by the welded iron strap S, carefully fitted just under the hubs.

Figure 7 shows the special fresh-air inlet at the main sewer trap. Each of the main house sewers C C has a branch A to a double Y connection D at the sidewalk grating, and any dirt or other obstruction can be very readily removed through its cleaning hole at B and another at E in the double Y connection F with the main sewer.

The plumbing in this building was done by Byrne & Tucker, of New York City.