CFB Construction Techniques 2

Question 1

When installing synthetic turf on an athletic field, what is the correct sequence for the base layers?

Accepted Answer

Subgrade, drainage aggregate, stone base, turf surface

Answer

The correct sequence is compacted subgrade first, followed by drainage aggregate, then the stone base layer, and finally the turf surface.

Question 2

Which compaction method is most appropriate for fine-grained cohesive soils in field construction?

Accepted Answer

Sheepsfoot roller

Answer

Sheepsfoot rollers are designed for cohesive fine-grained soils because their protruding feet knead and densify clay-rich materials effectively.

Question 3

What is the primary purpose of a perimeter drain system installed around a sports field?

Accepted Answer

To intercept and remove groundwater and surface runoff

Answer

Perimeter drains intercept groundwater from surrounding areas and collect surface runoff to keep the field drainage system from being overwhelmed.

Question 4

When constructing a sand-based root zone for a golf green, what is the typical depth specification?

Accepted Answer

8 to 12 inches

Answer

USGA-method golf greens specify a sand root zone of 12 inches in depth to provide adequate drainage while supporting healthy turfgrass roots.

Question 5

In field construction, what does 'subgrade preparation' primarily involve?

Accepted Answer

Shaping and compacting native or imported soil to the design grade

Answer

Subgrade preparation involves grading and compacting the soil foundation layer to the designed slopes and elevations before any base materials are placed.

(CFB) Certified Field Builder Practice Test

(CFB) Certified Field Builder Practice Test

CFB Construction Techniques 2