A technician is installing a new foundation drain system around a residential dwelling. To ensure proper drainage and prevent hydrostatic pressure build-up, where should the foundation drain tile primarily be placed relative to the footing?

Question: A technician is installing a new foundation drain system around a residential dwelling. To ensure proper drainage and prevent hydrostatic pressure build-up, where should the foundation drain tile primarily be placed relative to the footing?

Answer options:

• Directly on top of the footing. ✅ Below the top of the footing.
• Flush with the top of the finished basement floor.
• At least 600 mm above the footing.

Correct answer: Below the top of the footing.

Explanation: Foundation drain tiles should be placed below the top of the footing to effectively collect groundwater before it can exert hydrostatic pressure against the foundation walls and basement floor. Placing it on top or higher would allow water to accumulate against the foundation.