51.5.2.a.i. Depth and Spacing

Try these first

1. 1.

   What is the recommended depth range for drainage pipes?

   Hint

   Refer to the depth section discussed.

2. 2.

   Name one type of material used for drainage pipes.

   Hint

   Think of common materials mentioned.

3. 3.

   What is the recommended depth for subsurface drains?

   • 1.0-1.5 meters
   • 1.2-2.0 meters
   • 2.5-3.0 meters

   Hint

   Remember the depth range discussed.

4. 4.

   True or False: Wider spacing of drainage pipes is always better.

   • True
   • False

   Hint

   Consider the soil characteristics discussed.

5. 5.

   Design a subsurface drainage system for a mixed soil field, detailing how depth and spacing would differ in sandy areas compared to clay areas.

   Hint

   Use contrast in soil types to justify your design.

6. 6.

   Discuss the potential consequences of improperly designed drainage systems in agricultural fields.

   Hint

   Think about both short-term crop effects and long-term soil health.