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22 Cards in this Set
- Front
- Back
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What are some Static supply sources that are alternatives to pressurized water supply systems?
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-Lakes
-Rivers -Oceans -Cisterns -Streams -Portable water tanks -Swimming pools |
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The process of raising water form a static source to supply a pumper.
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Drafting
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The elevation difference between a static water supply source and the pump intake.
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Lift
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In the customary system of measurement, at sea level a pump could theoretically lift water __._ft.
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33.8ft
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The maximum height to which any amount of water may be raised through hard intake hose to the pump.
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maximum lift
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In most circumstances a fire pumps lift is no more than what?
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25ft
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The height a column of water may be lifted in sufficient quantity to provide a reliable fire flow.
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Dependable Lift
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Every fire pump in good repair should have a dependable lift of at least what?
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14.7ft
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The pump is only able to deliver __% of it's capacity at a 15-foot lift and __% at a 20-foot lift.
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70% ; 60%
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What are the two primary types of static water supply sources that firefighters my draw from if necessary?
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-Natural
-Man-made |
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What are the two primary factors that must be considered when evaluating natural static water supply sources?
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- Adequacy
-Accessibility |
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The adequacy of a stream my be determined using what formula?
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Q= A x V x 7.5
Q= flow in gpm A= area in ft squared V= velocity in ft/min 7.5= constant(number of gallons per ft cubed) |
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In small lake capacity, for every 1ft of depth per acre of surface area, water can be provided to what flow for how long?
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1000 gpm for 5 hours
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Regardless of the assumed water depth, all firefighters working in close proximity to bodies of water must wear what?
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PFD
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What are common types of man-made static water supply sources?
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- Cisterns
- Private Water Storage Tanks - Ground Reservoirs - Swimming Pools - Agricultural Irrigation Systems |
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Underground water storage receptacles that are usually found in areas that are not serviced by a hydrant system.
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Cisterns
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Cisterns capacities range in what sizes?
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10,000-100,000 gallons are common.
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Man-made impoundments that have the same characteristics of a pond or a small lake.
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Ground Reservoir
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Square or rectangle pool equation
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Gallons = L x W x D x 7.5
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Round pool equation
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Gallons= pi x R2 x D x 7.5
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Agricultural irrigation systems in some locations flow in excess of ____gpm.
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1000 gpm
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Irrigation water is generally transported by what two methods?
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- open canals
- portable pipes |
