Chapter 8 Flashcards
What are the most commonly used sizes of fire hose
1.5” (125gpm)
1.75” (150gpm)
2” (200gpm)
2.5” (300gpm)
What is the primary advantage of using 2 in hand lines
Higher Flows at lower pressures
What is the smallest recommended attack line for fire departments for utilizing during high-rise of standpipe operations?
2”
Used as a guideline for firefighters and officers as to when and where the 2.5 in hand line should be used
A.D.U.L.T.S Acronym
What is the ADULTS acronym?
Advanced Fire
Defensive
Unable to identify size/location
Large/uncompartmentalized
Tons of water
Standpipes
What is the Reaction Force Formula for Smooth Bore
RF=1.57 x (BD x BD) x NP
Reaction Force Formula for Combination Nozzles
RF = gpm x √NP x .0505
What is the ideal friendly pumper apparatus setup
At least one 2.5 in pre-connected attack line and a static bed of 2.5 inch hose minimum of 600 ft
What is among the engine company’s greatest enemies on the fire ground and can lead to operational failure and firefighter injuries?
Kinks
What is a good starting point on most high-rise and stamped by the quick buildings as far as length of hose required?
150 ft
What is at the heart of every failed 2.5 in handline operation?
Excessive or improper operating pressures
Friction loss in 2.5 inch hose is _____ times less than that of 1.75 inch hose at equal flows.
6x
What is one of the best tools to help firefighters achieve a successful fire ground operation when using 2.5-in attack lines.
Low pressure nozzles
Ideally what is the minimum Personnel needed to effectively advance and operate a 2.5 inch attack line
Two engine companies or six people
What is the 7th and most important key to success when using a 2.5 in tact line?
Training
