The water supply for the building is received through two 4-inch pipes A A, Fig. 10, one of which is supplied from the regular city distribution main, and the other from a special Street fire line. All the water passes through the 4-inch Worthington meters C C, which deliver through the 4-inch pipe D. Ordinarily valves E and F are closed and G and H are open, so that the suction tank L is filled through the 2-inch branch I and ball cock K, and the pumps draw through the 4-inch suction pipe J and branch M, but by closing H and opening F the suction is through J, direct from the meter pipe D. If valve F is closed and E opened the suction tank will be filled direct from the meters without reference to the ball cock. N is a separate 2-inch supply to the cellar distribution tanks, O is a 4-inch overflow, and P is a 1½-inch emptying pipe which, together with O, discharges into one of the 3-inch pipes Q Q, which carry the cellar drainage, drips, etc. to the iron tank R, Fig. 11, which is about 7 feet in diameter and 30 inches deep, and is set several feet below the level of the street sewer into which its contents are periodically pumped through the 2 ½ -inch suction pipe S of a steam pump. A 2-inch pipe T is connected with the exhaust head above the roof and brings its condensation water to the tank; its 1 ½-inch branch U serves as a vent opening at the cellar ceiling. The tank is tightly closed by the manhole cover V, which is accessible through the cast-iron well W, the cover-plate X of which is set flush with the cellar floor.

Figure 12 shows the connection of the 6"x4"x6" Worthington pumps, one of which H is for the house and roof tank and the other B is for the boiler service. Their supply is through the 4-inch pipe J, as described in Fig. 10, and the suction branches K K and their delivery through pipes C and D. Ordinarily valves E and F are closed and G and I are open so that pump H delivers through branch L to the 4-inch roof-tank pipe A, and pump B delivers through branch M to the boiler feed supply pipe N but by closing valve E and opening G pump H will deliver through branch P to the boilers, and by closing valve I and opening F, pump B will deliver through branch O to the tank. Q is an air chamber, and S S S S are steam pipes.

Figure 13 shows a perspective of the distribution tanks or drums whose connections have been developed from the original preliminary arrangement of two of them shown in Fig. 5. The three vertical cylindrical galvanized iron tanks are respectively T, 200 gallons, cold, tank pressure; S, 200 gallons, cold, street pressure; and H, 150 gallons, hot. tank pressure. A is the 4-inch supply pipe from the roof tank with 2-inch branches B B. N is the 2-inch supply from street mains, as shown in Fig. 10. C is the 2-inch emptying pipe. E and E are ¾-inch steam and exhaust pipes to the 4-inch brass steam heating coil inside tank H. D and D are ¾-inch hot-water return-circulation pipes from the systems in the north and south sections of the building respectively. All the other pipes shown are 1½-inch hot and cold water supply pipes to different parts of the distribution system as follows: Cold water, I and J to the basins, flush tanks, etc. in the north section; L and M, the same to the south sections; K and R to the suction tank of the elevator pumps; O to the barber shop and bathtubs; P to the south and Q to the north section; U to the basement toilet-room. The hot-water supplies are: V to barber shop and bathtubs, W to slopsinks, and X to the restaurant. Z Z Z Z, is a pipe frame supporting the tanks. Tanks T and H are always under pressure from the roof tank, and tank S is normally under street pressure, but it also may be placed under tank pressure by closing valve G and opening F. The supply pipes are commanded by valves Y Y, etc., which are connected to the tops of right and left nipples which can be unscrewed so as to disconnect any riser from its horizontal branch into the tank, without moving or disturbing any other connection.

PIPE SYSTEMS AND PRESSURE TESTS IN THE HAVEMEYER BUILDING, NEW YORK CITY, etc.