CTQP Earthwork Construction Inspection 2

Question 1

What piece of equipment is commonly used to compact cohesive soils in earthwork operations?

Accepted Answer

Sheepsfoot or padfoot roller

Answer

Smooth drum vibratory roller

Answer

Pneumatic tire roller

Answer

Plate compactor

Question 2

What is the purpose of a subgrade proof roll in earthwork inspection?

Accepted Answer

To identify soft or unstable areas in the prepared subgrade

Answer

To apply waterproofing to the subgrade surface

Answer

To measure the thickness of the subgrade layer

Answer

To compact the top 6 inches of subgrade

Question 3

What is 'muck excavation' as defined under FDOT pay items?

Accepted Answer

Excavation and removal of organic, unsuitable material

Answer

Excavation of any material below the water table

Answer

Excavation performed with specialized underwater equipment

Answer

Excavation of rock material in wet conditions

Question 4

When inspecting a fill slope, what ratio does '3:1' indicate?

Accepted Answer

1 foot vertical for every 3 feet horizontal

Answer

3 feet vertical for every 1 foot horizontal

Answer

3% grade over 1 mile

Answer

3 tons of compaction force per 1 square foot

Question 5

Which soil classification system is most commonly referenced in FDOT earthwork specifications?

Accepted Answer

AASHTO Soil Classification System

Answer

USCS (Unified Soil Classification System)

Answer

USDA Textural Classification

Answer

ASTM D 2487

Question 6

What document controls the acceptable limits for earthwork on an FDOT project?

Accepted Answer

The Standard Specifications for Road and Bridge Construction

Answer

The geotechnical investigation report only

Answer

The contractor's quality control plan

Answer

The environmental permit