Term
What pressure should solid stream nozzles be operated at when used on the end of handlines? |
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Definition
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Term
What is best to adjust first before driving the apparatus? |
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Definition
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Term
Where are traffic control sensors located? |
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Definition
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Term
Which of the following is a method of determining friction loss? |
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Definition
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Term
What is the speed at which a fluid travels often referred to? |
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Definition
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Term
What is generally accepted as the maximum size for hose that is used as handlines? |
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Definition
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Term
How far from the finish line must the driver/operator stop the apparatus when performing the diminishing clearance exercise? |
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Definition
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Term
What should be done when approaching an intersection where buildings block the driver's view of oncoming traffic? |
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Definition
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Term
Which system of the apparatus has the greatest incidence of collision resulting from poor maintenance? |
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Definition
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Term
How many different sources are most water systems supplied from? |
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Definition
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Term
Which piece of ice would absorb heat more quickly? |
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Definition
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Term
What is the quantity of heat absorbed by a substance when it changes from a liquid to a vapor? |
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Definition
Latent heat of vaporization |
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Term
What percentage of all firefighter injuries and deaths in the United States are shown to be from vehicle collisions? |
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Definition
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Term
Friction loss in hard piping is _________? |
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Definition
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Term
How many times per minute does the ABS on an apparatus evaluate the tires and brakes? |
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Definition
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Term
What must be used in conjunction with a fog stream to ensure that steam burns do not occur? |
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Definition
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Term
How long after starting the apparatus should the oil pressure gauge indicate a reasonable amount of pressure? |
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Definition
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Term
Which of the following factors determines the amount of heat a combustible object can produce? |
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Definition
Material from which it is composed |
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Term
Which type of valve visually shows whether the gate or valve seat is open, closed or partially closed? |
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Definition
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Term
What is the range of activation for traffic control systems that "hear" the siren of the responding apparatus? |
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Definition
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Term
Which lane should the apparatus remain in when traveling on a multilane roadway? |
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Definition
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Term
How many batteries are most fire apparatus equipped with?2 |
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Definition
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Term
How much hose should be laid out if the hose is in lengths of 50 feet when determining friction loss? |
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Definition
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Term
Which type of nozzle can be used to attack attic fires? |
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Definition
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Term
What psi should be used when supplying a low-pressure fog nozzle to ensure safety? |
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Definition
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Term
How many Btu's are required to convert each pound of water to steam after it has reached its boiling point? |
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Definition
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Term
What should be done to perform pressure loss calculations when hoselines of different diameters are used to supply the master stream? |
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Definition
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Term
What is the key to safe driving? |
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Definition
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Term
What determines if water will float on the surface of another liquid? |
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Definition
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Term
How many test runs should be performed for each hose size when performing friction loss testing? |
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Definition
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Term
What is the most current formula for computing friction loss? |
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Definition
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Term
Which of the hoselines is used to determine the total pressure loss in a system using a manifold appliance? |
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Definition
The highest pressure loss in any of the lines |
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Term
What part of the automatic nozzle moves automatically to maintain approximately the same nozzle pressure when the gallonage supplied to the automatic nozzle changes? |
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Definition
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Term
Where is the ladder pipe generally attached when preplumbed? |
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Definition
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Term
At what speed do studies show that an emergency vehicle can outrun the effective range of its audible warning device? |
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Definition
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Term
What depth of snow would most likely render automatic snow chains ineffective? |
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Definition
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Term
What are the network of intermediate-sized pipes within the grid system? |
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Definition
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Term
How is hose length represented in the formula for calculating friction loss? |
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Definition
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Term
When all other conditions are the same what is friction loss said to be directly related to according to the first principle of friction loss? |
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Definition
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Term
Which type of monitor is permanently attached to the apparatus? |
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Definition
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Term
Which principle of pressure states that the pressure at thee bottom of a vessel is independent of the shape of the vessel? |
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Definition
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Term
According to the third principle of pressure how is pressure applied to a confined fluid from without transmitted? |
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Definition
Equally in all directions |
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Term
What does it mean if the threaded portion of the OS&Y valve is out of the yoke? |
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Definition
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Term
How much water can the piercing nozzle generally deliver? |
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Definition
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Term
Which gear should be used when operating an automatic transmission in heavy traffic? |
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Definition
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Term
What is the specific gravity value of most flammable liquids? |
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Definition
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Term
What is the first thing that should be done when starting the vehicle? |
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Definition
Disconnect all ground shore lines |
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Term
What is the first step that needs to be taken when determining friction loss? |
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Definition
Obtain the friction loss coefficient |
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Term
How many firefighters are preferred to be used as spotters when backing a fire apparatus? |
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Definition
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Term
How many types of hose should be tested at one time when testing a particular type of hose? |
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Definition
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Term
What pressure is required to reduce water's volume by one percent? |
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Definition
30,000 psi ie water is not compressible |
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Term
Which exercise simulates maneuvering around parked and stopped vehicles? |
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Definition
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Term
What condition occurs when water is abruptly turned off that can damage the pump, appliances, hose or the municipal water system? |
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Definition
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Term
What must be done when the water flow of a master stream is too much for a single pumper? |
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Definition
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Term
How far apart as a minimum should two apparatus responding along the same route follow each other? |
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Definition
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Term
Where should gating take place when using manifold appliances? |
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Definition
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Term
Which type of weight transfer tends to lead to skidding and/or rollover with a fire apparatus? |
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Definition
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Term
What is the part of the total pressure lost while forcing water through pipe, fittings, fire hose and adapters? |
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Definition
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Term
Which NFPA standard lists the nozzles that are required to be carried on the apparatus? |
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Definition
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Term
What is the constant value used in the simplified elevation pressure equation for the fireground? |
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Definition
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Term
What can be deemed less effective when the full spectrum of warning lights are left on at night once the apparatus has reached the scene? |
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Definition
Firefighter reflective clothing |
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Term
What would be the repercussions if water treatment facilities were not able to function properly? |
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Definition
Reduction in water pressure |
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Term
What is the recommended idle period before shutting down an apparatus after use? |
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Definition
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Term
What nozzle pressure are most constant flow nozzles designed to operate at? |
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Definition
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Term
Which situation would the brakes be used when the apparatus is equipped with engine brakes or retarding devices? |
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Definition
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Term
How many right and left turns are required during the road test as a minimum according the NFPA 1002? |
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Definition
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Term
Which type of stream is created when water is forced through a series of small holes on the discharge end of the nozzle? |
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Definition
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Term
What divisor should be used when determining the total number of hundreds of gpm flowing in the supply line to the wye? |
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Definition
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Term
Where should the engine be set to idle when being used for floodlight operations? |
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Definition
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Term
Friction loss in a system increases as the length of hose _________? |
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Definition
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Term
What is the generally accepted friction loss assumption for flows less than 350 psi when an appliance is being used? |
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Definition
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Term
What does the fifth principle of pressure deal with? |
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Definition
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Term
Which regulations apply to the emergency responder even when en route to an incident? |
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Definition
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Term
Which NFPA standard deals with how all fire apparatus training and testing should be conducted? |
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Definition
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Term
How long as a minimum should the straight section of urban business street be when performing road tests under NFPA 1002? |
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Definition
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Term
Which NFPA standard regulates the wearing of seatbelts by all passengers on the apparatus? |
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Definition
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Term
Which of the following road conditions are more collisions seen on? |
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Definition
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Term
When should the apparatus be shifted into a lower gear on sharp curves? |
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Definition
Before entering the curve |
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Term
How much pressure (psi) per foot of elevation does water exert? |
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Definition
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Term
Which nozzle pressures on the automatic nozzles are most commonly used in high-rise firefighting? |
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Definition
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Term
What is the minimum recommended size for fire hydrant supply mains in residential areas? |
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Definition
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Term
Where should the first gauge be placed when conducting friction loss testing? |
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Definition
At the connection between the first and second sections of hose away from the discharge |
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Term
What is the minimum width of the space used to perform the confined space turnaround? |
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Definition
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Term
How far from the first gauge should the second gauge be connected when 50-foot lengths of hose are being used in the friction loss testing? |
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Definition
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Term
What is the generally accepted maximum nozzle pressure for solid streams? |
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Definition
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Term
Which of the following would NOT be classified as a simple hose layout? |
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Definition
Multiple length multiple hoselines |
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Term
What is the minimum number of directions a fire hydrant should be supplied from to reduce the amount of pressure loss? |
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Definition
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Term
What is the difference between static pressure and normal operating pressure? |
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Definition
Friction caused by flowing water |
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Term
What can be done to reduce the adverse effects of encrustation and sedimentation? |
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Definition
Flush hydrants periodically |
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Term
Which formula can be used to more easily determine the elevation pressure in a multistory building? |
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Definition
EP=5psi(number of stories - 1) |
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