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Caption: Dedication - New Chemistry Building
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which is driven to all parts of the building, entering the rooms through conduits at the ceiling. Foul air is forced out through the opening in the hood flues. The air is changed six times per hour, the temperature being controlled by automatic regulators. A small exhaust fan in the attic removes the air from the toilet rooms. There are also four chemical exhaust fans, each capable of handling 10,000 cubic feet of air per minute, which are used to remove the impure atmosphere from some of the laboratories and hoods. Special attention has been given to the electrical equipment of the laboratories, five systems being available in all parts of the building: 10, n o , and 220 volt direct current and n o and 220 volt alternating current. Besides these many of the laboratories are supplied with current from the storage battery system of 35 cells. Scattered through the building there are 150 wall plugs, 160 experimental plug boxes and 16 motor boxes, making electrical current available in all places. The lighting is the indirect system, there being 730 lighting outlets and 300 wall switches. The total electrical load of the building is 130 kilowatts, there being in use three transformers of 50 K. W. each. The type of construction and the completeness of the equipment of the new building may be inferred from the following tabulation of materials used: Structural steel Reinforcing steel Cement Sand and gravel Lime Brick Pyrobar • Hollow tile for floors Sewer tile Cut stone Terrazzo steps and risers Plastering Sheet copper Skylight glass Radiating surface—181 radiators Steam pipe Covering for steam pipe Pipe for temperature control Conduits, for electric system Electric wiring Iron p i p e w for water, gas, vacuum, etc.. Block-tin pipe for distilled water Alberene (21.500 square feet) (fl) Excluding table fittings. 402 tons 135 tons 75,000 barrels 6,000 cubic yards 3,000 barrels 2,000,000 65,000 square feet 50,000 square feet 5,600 feet 5,000 cubic feet 2,700 feet 33,000 square yards 30,000 pounds 2,500 square feet 11,000 square feet 10,600 feet 4,330 feet 4,000 feet 8.32 miles 12.78 miles 3.6 miles 2,500 feet 214 tons THE LABORATORY EQUIPMENT THE DIVISION OP INORGANIC CHEMISTRY AND QUALITATIVE ANALYSIS occupies one laboratory on the fourth (43)
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