You should space lawn sprinkler heads so the coverage does not exceed ________ of another sprinkler head's coverage.

You should space lawn sprinkler heads so the coverage does not exceed ________ of another sprinkler head's coverage.

• A. 100%
• B. 50%
• C. 10%
• D. 25%

Answer: (B)

Uniform irrigation relies on overlapping sprinkler spray patterns so every point in the lawn receives water from more than one head. Spacing heads so that one head’s coverage overlaps with its neighbor by about half keeps the water distribution even and helps prevent both dry spots and puddling. Choosing spacing that limits overlap to about 50% of another head’s coverage gives a balanced overlap: enough shared area to smooth out the application rate, while avoiding excessive redundancy that wastes water. If the coverage overlapped too little, dry spots would form between heads; if it overlapped too much, you’d waste water and risk overwatering the areas where patterns pile up. That’s why the best choice is 50%. The other options would either reduce overlap too much (risking dry spots) or increase overlap excessively (leading to inefficiency and runoff).

Uniform irrigation relies on overlapping sprinkler spray patterns so every point in the lawn receives water from more than one head. Spacing heads so that one head’s coverage overlaps with its neighbor by about half keeps the water distribution even and helps prevent both dry spots and puddling.

Choosing spacing that limits overlap to about 50% of another head’s coverage gives a balanced overlap: enough shared area to smooth out the application rate, while avoiding excessive redundancy that wastes water. If the coverage overlapped too little, dry spots would form between heads; if it overlapped too much, you’d waste water and risk overwatering the areas where patterns pile up.

That’s why the best choice is 50%. The other options would either reduce overlap too much (risking dry spots) or increase overlap excessively (leading to inefficiency and runoff).