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2 cards from this section. Quick, good the night before a test.
What is sub grade soil?
Think about the role it plays below the road surface.
Name one test used to evaluate sub grade soil.
It's a test specifically focused on strength.
What is the main function of sub grade soil?
Consider what role the soil plays beneath the road.
The CBR test measures what aspect of sub grade soil?
Think about how engineers need to measure the resistance of soil.
Given a site with identified clay sub grade soil, discuss the implications for pavement design and suggest methods to improve its load-bearing capacity.
Think about the adaptive measures engineers take for problematic soils.
Analyze the results of a CBR test yielding a value of 3%. Discuss what design alterations may be necessary for the pavement.
Recall how lower CBR values require more substantial engineering interventions.
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