AUTOBIOGRAPHY OF JOHN FRITZ 223
machines, and apparatus for making standard cement tests.
The concrete room is under the cement room and is used by the students for the constmction of cubes, beams, and cyluiders for testmg; also for the construction of concrete columns, plain and reenforced, and concrete beams, of commercial size, wlflch are tested for strength by the students. It is coimected with the mam testing room by a hatchway through which the heavy specunens may be hoisted into the main room by the crane. The equipment consists of bins for sand and stone, mixer, and moulds.
The hydrauUc section occupies the northeastern portion of the building. The lower floor is 10 feet below the level of the testing room, the second floor or elevated platform is 10 feet above the testing-room level, giving 20 feet of clear height.
The equipment on the lower floor consists of:
I DeLaval centrifugal pump, 2000 gaUons per minute
against 60 feet head. I Atlantic HydrauUc Machinery Co. centrifugal pump, 200 gaUons per minute against 255 feet head.
1 steel pressure tank, 65^ mches_ m diameter by 34
feet 6 inches high.
2 steel caUbrating tanks, 8 feet m diameter by 12 feet
3 steel weighmg tanks, 4 feet m diameter by 3 feet
high. I steel weir tank, 4 feet by 4 feet by 21 feet long. I Trump turbme. I Pelton water wheel. I Rife hydrauUc ram. The upper platform carries:
I steel weir tank, 3 feet by 3 feet by 18 feet long. I steel tank, 6^ feet wide, 3 feet deep, 17I feet long.