Hydraulics Manual
What is the formula for calculating friction loss
FL = C x [(Q)2 x L] / 100
When should you use the U-turn access points between jersey barriers?
Only when necessary immediate lifesaving measures
Who secures the primary water supply on a single family dwelling?
First or Second Due Engine
How much does a gallon of water weigh?
8.3lbs
What is the run route to Centreville Regional Library?
L - Old Centreville Rd
L - Route 29
L - Machen
R - St Germain Rd
R - Library
How much GPM comes from a 15/16" tip at 50psi
185gpm
Emergency response to incidents on limited access highways should include how many units traveling in each direction?
At least one unit traveling in each direction.
Side A, Force entry, Search and rescue, Vent, Ladders
Master stream fog nozzles can flow up to how many GPMs?
2000gpm
Ideally, what aerial units is preferred on side A of a commercial building fire?
Tower Ladder
What are the stacked tip sizes for the engines?
1 3/8"
1 1/2"
1 3/4"
2"
When responding together in the same direction, how should they proceed to less confused the citizens?
In a single file.
How many engines are dispatched on a high rise fire and what is the role of the last engine?
Five, Lobby control
What kind of pump is the primer pump?
Positive Displacement Pump - Used to exhaust the air from inside the centrifugal pump to create a partial vacuum lowering the atmospheric pressure drawing water in.
What is the name of the street on the other side of Centreville Rd (Rt 28) if you are on Green Trails Blvd
Old Mill Rd
What is the relay starting pressure for 3'' lines?
50psi. 100psi for 3" + 4" and 4"
Drivers should place blocking apparatus how far behind the first operating unit?
At least 50ft
Where is RIT staged at during a high rise fire?
RIT Attack Stairwell, (one floor below the fire floor)
What is the theoretical and fire ground calculations of 1 3/16" tip at 50psi?
Theo - 296gpm
Fireground - 300gpm
What is the address to Fair Oaks Hospital?
3600 Joseph Siewick Dr
Fairfax, VA 22033
What is the rating for the JS-10 nozzle?
100gpm @ 100psi
This positioning is known for placing vehicle at an angle to the lanes with the front wheels rotated away from the incident and pump panel facing toward the work area
Fend-off position
What is the role of the first in engine on a midrise or high rise?
Abandon rig, Knox Box, Check FACP, gather keys from control room, recall elevator, Identify fire floor, identify attack stairwell.
How much water does 100' of 4" hold?
65.25 Gallons
How many streets are in Bent Tree Apartments and what are they?
Bent Tree Cir
Bent Tree Ln
Cedar Walk
Hollow Oak Ln
Bayberry Ln
Winding Oak Cir