If the top of the pipe is greater than 15 inches below the bottom of the base, what density is required in the Cover Zone?

Prepare for the Earthwork Level 2 Test with quizzes and detailed explanations to enhance your understanding and skills in earthwork operations. Get ready for your test with our comprehensive guide and practice material.

Multiple Choice

If the top of the pipe is greater than 15 inches below the bottom of the base, what density is required in the Cover Zone?

Explanation:
The density in the Cover Zone is governed by a percentage of the maximum dry density from AASHTO T-99. When the top of the pipe is more than 15 inches below the bottom of the base, the cover material doesn’t need to be compacted to the full maximum density. The standard requirement here is 95% of the maximum dry density, balancing adequate support with reducing the risk of over-stressing or damaging the pipe during compaction.

The density in the Cover Zone is governed by a percentage of the maximum dry density from AASHTO T-99. When the top of the pipe is more than 15 inches below the bottom of the base, the cover material doesn’t need to be compacted to the full maximum density. The standard requirement here is 95% of the maximum dry density, balancing adequate support with reducing the risk of over-stressing or damaging the pipe during compaction.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy