What determines the size of the pipe used in a sprinkler system?

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Prepare for the CR-21 Landscapes and Irrigation Test. Utilize flashcards and multiple-choice questions featuring hints and explanations. Get exam-ready!

Multiple Choice

What determines the size of the pipe used in a sprinkler system?

Explanation:
The size of the pipe is driven by the amount of water that must flow through it, measured as gallons per minute (GPM). When you need more GPM, you need a larger pipe to carry that water without losing too much pressure. Friction losses grow with flow and pipe length, so a pipe that’s too small will drop pressure too much by the time water reaches the sprinklers, causing weak or uneven spray. Other factors like distance from the water source or elevation changes influence pressure, but the pipe diameter is chosen to meet the required GPM while keeping the pressure drop within acceptable limits.

The size of the pipe is driven by the amount of water that must flow through it, measured as gallons per minute (GPM). When you need more GPM, you need a larger pipe to carry that water without losing too much pressure. Friction losses grow with flow and pipe length, so a pipe that’s too small will drop pressure too much by the time water reaches the sprinklers, causing weak or uneven spray. Other factors like distance from the water source or elevation changes influence pressure, but the pipe diameter is chosen to meet the required GPM while keeping the pressure drop within acceptable limits.

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