What Every Fire-Fighter Should Know

Issue 6 and Volume 72.

What Every Fire-Fighter Should Know A Series of Articles Covering Every Phase of Fire Fighting OFFICE BUILDINGS, OLD AND NEW (Continued from page 227) Method of Operating (Continued) At a recent test of the pumps of the new Equitable building four fire streams with 1 1/8-inch nozzle were operated at a level of 515 feet from street grade, pump delivering over 1,000 gallons a minute, and nozzle pressures varying from 40 to 55 pounds. This building has no intermediate tanks, and reducing valves are installed in stand pipe fire lines to regulate pressure at different levels, so that at no time should there be more than 50 pounds at each floor outlet. In order to test the reliability of the reducing valves, a line of hose was connected to outlet at grade level, valve at outlet opened, and the pressure at nozzle showed 125 pounds. This clearly indicated that the…

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