IFSTA 8 Fire Ground Calculations Flashcards
what methods are used for determining pressure loss and required pump discharge pressure
281 3rd
Flowmeters hydraulic calculators pump charts condensed Q formula GPM flowing
Flometers provide what
282 3rd
Water flow in GPM
flow meters are particularly advantageous in what application
282 3rd
Supplying hose lines or master streams equipped with automatic nozzles
how accurate should flow meters be when properly calibrated and in good working condition
3rd edition page 282
+- 3%
meters have a discharge read out display mounted within how many inches of the valve control for each discharge equipped
282 3rd
6”
A central flow meter device provides what information to the driver operator
Second edition page 253
The flow through any particular discharge
total amount of water being flowed through the pump
total amount of water that has been flowed through the pump for the duration of the incident
the amount of foam being flowed
When using a flow meter for relay pumping, as the engine speed increases what occurs to the discharge and GPM reading?
283 3rd
The discharge and GPM reading increase
When using a flow meter for standpipe operations determine the number and type of nozzles connected to the stand pipe, then add ———- for each nozzle flowing, then pump the volume of water that matches this figure
283 3rd
flow rate
what three items do manual or mechanical hydraulic calculators indicate
284 3rd
Water flow
size of hose
length of Hose lay
when calculating the required pump discharge pressure for each of the listed layouts on a flow chart, round the pump discharge pressure to the nearest…?
Second edition page 255
5 psi
what size hose lines can the condensed Q formula be applied?
287 3rd
3”, 4”, 5”
what is the equation for determined friction loss in 4 inch hose using the condensed Q formula?
287 3rd
Q^2 / 5
what does the driver operator need to know in order to use the GPM flowing method?
288 3rd
Water flow in GPM
When using the GPM flow method, Factor the flow and gallons per minute from the nozzle at a given pressure you then my subtract —— from the first two numbers of the GPM flow
288 3rd
10
Flowmeters must play display flow in increments of —-GPM or less
282 3rd
10
