What is a typical purpose of using taller risers in sprinkler installations?

• A. To elevate watering of large shrubs and plants.
• B. To reduce water pressure in the main line.
• C. To anchor sprinklers to concrete.
• D. To filter water entering the system.

Answer: (A)

Riser height in irrigation is about placing the sprinkler head at a height that matches the target vegetation. Elevating heads with taller risers lets the spray reach the canopy of larger shrubs and plants instead of spraying mostly at ground level. When a head sits higher, its pattern can better cover the intended plant areas, reduce spray hitting mulch or low-lying obstacles, and avoid being blocked by foliage. This helps ensure the water is delivered where the plants need it, improving coverage and uniformity for taller landscape elements.

Other options don’t fit this purpose: risers aren’t used to lower pressure in the main line, they aren’t primarily for anchoring heads to concrete, and they don’t filter water.