. Carnegie Institution of Washington publication. Research Buildings 193 The pinnibing arrmxgements are exceptionally complete. Enameled-iron sinks with hot and cold water are installed in all laboratory rooms and where needed in the shop rooms and elsewhere. The lavatories are finished in white marble, with complete appointments and shower baths. All fixtures are back-vented. A gas connection is in general supplied to one wall-bracket in each room for use when, for any reason, there is an interruption in the electric power supply. All exposed water pipes in the basement and sub-basement are c
. Carnegie Institution of Washington publication. Research Buildings 193 The pinnibing arrmxgements are exceptionally complete. Enameled-iron sinks with hot and cold water are installed in all laboratory rooms and where needed in the shop rooms and elsewhere. The lavatories are finished in white marble, with complete appointments and shower baths. All fixtures are back-vented. A gas connection is in general supplied to one wall-bracket in each room for use when, for any reason, there is an interruption in the electric power supply. All exposed water pipes in the basement and sub-basement are covered with five-eighths inch felt covering wrapped in a double thickness of canvas and bound with brass bands. No special provisions were made for protection against lightning; the copper sheathing surrounding the edge of the observation deck, and the numerous vent pipes, are deemed sufficient 5CALI- IN r iCALI, IN M£, Fig. 4.—Plan of Sub-basement of Main Building. The sub-basementwalls (Fig. 4) areunplastered, except for the constant-temperature room, the brickwork being finished with struck joints and painted cream white with water color. The room for the heating jjlant is supplemented by a coal vault having a capacity of 50 tons, which extends to the rear under the roadway, and is provided with two manholes for receiving the coal; the floor is slightly above the level of the furnace-room. The city coal-gas not being available, it was necessary to install a gasoline gas-generator in the fur- nace-room, with an underground gasoline reservoir placed outside. This room also con- tains the hot-water heater of 150 gallons capacity and the hot-water storage 100-gallon tank for supplying hot water to all sinks and lavatories. A stationary vacuum-cleaner and motor, with outlets in various parts of the building, is mounted in the first vestibule to the large constant-temperature room. The latter room. No. 001, is surrounded by earth on all sides except for
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