Earthmoving & Heavy Construction Quiz

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Which process involves moving soil or rock from one location to another and processing it to meet construction requirements?

Loading and hauling (correct)

Compacting

Excavating

Grading

What is the term used to describe the ability of soil to support the weight of vehicles under repeated traffic?

Loadability

Compaction

Trafficability (correct)

Grading

What is a measure of the difficulty in excavating and loading soil?

Compaction

Loadability (correct)

Moisture content

Unit soil weight

Which material consists of rock particles larger than 76mm?

Gravel Signup and view all the answers

What is the process of dumping and spreading soil called in earthmoving?

Placing Signup and view all the answers

Which characteristic refers to the measure of the weight of a unit volume of soil?

Unit soil weight Signup and view all the answers

What is the main purpose of compaction in soil mechanics?

Expelling air from soil void spaces Signup and view all the answers

Which of the following is NOT a result of soil compaction?

Increased consolidation Signup and view all the answers

What key factor affects the degree of compaction in soil?

Moisture content Signup and view all the answers

Which force is primarily responsible for compaction through kneading in plastic soils?

Manipulation Signup and view all the answers

What distinguishes compaction from consolidation in soil mechanics?

Compaction forces water out of soil void spaces Signup and view all the answers

Which aspect does not influence the degree of compaction in soil?

Presence of vegetation on the surface Signup and view all the answers

What is the main characteristic that distinguishes silt from clay in soil classification?

Particle size larger than 0.002mm Signup and view all the answers

Which organization is responsible for the AASHTO soil classification system?

American Association of State Highway and Transportation Officials Signup and view all the answers

In the Unified System, how are coarse-grained soils and fine-grained soils designated?

Using two-letter symbols Signup and view all the answers

What does it mean when soil is described as 'bank' conditions?

Material in natural state before disturbance Signup and view all the answers

When does soil exhibit 'shrinkage' according to the text?

Soil will occupy less volume than under bank or loose conditions Signup and view all the answers

What is the defining characteristic of organic soils according to the provided text?

Contain decomposed matter Signup and view all the answers

What is a common use of the Proctor Test in soil evaluation?

Evaluating the soil's moisture density relation Signup and view all the answers

What is the significance of the Optimum Moisture Content in soil compaction?

Achieving maximum dry density under specific compaction effort Signup and view all the answers

What density requirement is typically specified for embankments, dams, and backfills?

95% of Standard Proctor density Signup and view all the answers

In the context of soil compaction, what does a specification requirement for 95% of Standard Proctor density correspond to?

Minimum dry density of 99.8 lb/cu ft Signup and view all the answers

What type of soils are impact or tamping vibrations effective for?

Cohesionless soils Signup and view all the answers

Which test is used to evaluate soil's moisture density relation in the field?

Proctor Test Signup and view all the answers

What percentage of Modified Proctor is commonly used for the support of structures where high wheel loads are expected?

100% Signup and view all the answers

How is the compacted density calculated in the Traditional Methods of measuring field density?

Material removed weight divided by volume of hole Signup and view all the answers

Which method of Traditional Methods involves using a uniform fine sand to fill both the hole and an inverted funnel?

Sand tests Signup and view all the answers

What is used to measure the volume of material removed in liquid tests for field density measurement?

Volume of liquid required to fill the hole Signup and view all the answers

Apart from nuclear density devices and nonnuclear density gauges, what other method is used to measure field density?

Sand replacement tests Signup and view all the answers

What is the common requirement of Modified Proctor for supporting floor slabs?

90% Signup and view all the answers