Earthwork Construction Inspection Flashcards
6 cards from real CTQP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Earthwork Construction Inspection flashcards as text
What piece of equipment is commonly used to compact cohesive soils in earthwork operations?
Answer: Sheepsfoot or padfoot roller
Sheepsfoot and padfoot rollers are most effective for compacting cohesive (clay) soils because their feet penetrate and knead the soil.
What is the purpose of a subgrade proof roll in earthwork inspection?
Answer: To identify soft or unstable areas in the prepared subgrade
A proof roll uses a heavily loaded tandem-axle dump truck driven across the subgrade to identify soft, pumping, or unstable areas that need remediation.
What is 'muck excavation' as defined under FDOT pay items?
Answer: Excavation and removal of organic, unsuitable material
Muck excavation is the removal of organic or otherwise unsuitable material from below the ground surface, typically replaced with suitable fill.
When inspecting a fill slope, what ratio does '3:1' indicate?
Answer: 1 foot vertical for every 3 feet horizontal
A 3:1 slope means 3 feet horizontal for every 1 foot vertical, and is a common slope for embankment side slopes in FDOT projects.
Which soil classification system is most commonly referenced in FDOT earthwork specifications?
Answer: AASHTO Soil Classification System
FDOT references the AASHTO soil classification system, which groups soils A-1 through A-7 based on gradation and Atterberg limits.
What document controls the acceptable limits for earthwork on an FDOT project?
Answer: The Standard Specifications for Road and Bridge Construction
FDOT's Standard Specifications for Road and Bridge Construction (and applicable special provisions) govern all earthwork requirements including material acceptance and compaction.