Leadership

QUESTIONS AND ANSWERS

Issue 16 and Volume 66.

QUESTIONS AND ANSWERS Conducted by NOTE—Readers of FIRE AND WATER ENGINEERING are invited to send in questions, which will be answered in the order in which they are received. Names are omitted from questions unless otherwise specified. Nozzle Pressure, Discharge and Friction Loss To the Editor: I would like to have the following question answered in your Questions and Answers Column: An engine is 200 feet away from an excavation which is 100 feet deep. The pressure at the engine is 175 pounds. 300 feet of 3-inch hose is laid reaching bottom of excavation ; a 3-way connection is attached and three lines connected to same; one line of 2 1/2-inch hose 200-feet with 1 1/4-inch nozzle; one line of 3-inch hose 150 feet with 1 1/2-inch nozzle, and one line of 2 ½-inch hose 250 feet with 1 1/8-inch nozzle. What is the pressure at each nozzle? What is…

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