This section is from the book "American Plumbing Practice", by The Engineering Record. Also available from Amazon: Plumbing: A working manual of American plumbing practice.
Figure 3 shows the construction and arrangement of the house storage tanks in the attic. They are built of ¼-inch wrought iron, and have a united capacity of about 15,000 gallons. They are filled through the 3-inch pump pipe A and separate valves B B on 2½-inch branches, and may be emptied through the 2½-inch pipes C C that discharge through the waste pipes W W of the 4-inch overflow stand-pipes O O. The latter terminate in copper funnels F F, about 8 inches in diameter and 8 inches high.
The house supply is through the 4-inch pipe S, with 3-inch branches D D, which serve as equalizing pipes between the two tanks and valves E E. These last enable either tank to be cut out for emptying, etc., without interrupting the house supply.
Figure 4 is a section through the bottom of the tank, showing details of safe and support. Figure 5 shows the automatic governor for pump D, Fig. 1. S is the suction and T the tank pipe. A is a ½-inch pressure pipe from the tank connected to a diaphragm damper regulator B, which has a slide weight P, and suspended weight Q, so adjusted that the lever arm C will only rise when the pressure is just equivalent to a full tank head on pipe A. E is a flexible copper wire cable tightly strained by weights P and Q, and having two adjustable clips I and J, set so that when lever C rises, clip J engages the lever G of valve U, and raising it, closes it and shuts off steam supply to the pump through pipe If. When tank pressure falls, lever C also falls, and clip I engages lever G, depressing it and opening valve U so as to admit steam and start the pump; when tank is again full, lever C rises and shuts off the steam and so on. K is a valve for operating the pump by hand, and L is a petcock.
Figure 9 is a view of the urinals in the principal toilet-room. The cistern C is in three compartments, each supplied through double ball cocks through water pipe B and flushing through ½-inch curved, silver-plated brass pipes that have special connections at A A to equalize the flow through pipes D D and E, in order that the latter may not receive more than one-third of the total amount. The diaphragm H is in -troduced at Z Z (see detail) to obstruct pipe E, and divert equal amounts of water through D and D.
Adjacent to the above toilet room is another containing three sets of water closets and one row of basins. The waste and soil pipes from all these fixtures are carried exposed just below the ceiling of the basement room underneath, and this arrangement is shown in the diagram Fig. 7. In this A A and B B are the branches to fixtures, each being connected with double Y's to the main soil pipes G and H, that Y into the 6 inch sewer-pipe S. The latter goes direct to the main sewer. D is a rainwater leader flushing out pipe S, and E and F are connections to washstands and urinal wastes. All parts of the pipes are commanded by the cleaning screws K K K.