Q: During heavy tamping to stabilize a site, a crane lifts a weight of 40 tons upto 15 m height & drop it freely. Determine the max depth of influence for densification of this site. Using Minard and Broise, Leonard, and Lucas approaches comment on the results and Which one would suggest and why. Subject: ground improvement techniques Program: Civil transportation engineering

Q: During heavy tamping to stabilize a site, a crane lifts a weight of 40 tons upto 15 m height & drop it freely. Determine the max depth of influence for densification of this site. Using Minard and Broise, Leonard, and Lucas approaches comment on the results and Which one would suggest and why. Subject: ground improvement techniques Program: Civil transportation engineering

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The site soil consists of loose sand that are dry within the top 3 m and saturated below. The present blow counts ranging between 2 and 10. Due to concerns regarding liquefaction dynamic compaction is proposed. The soil should be improved to a depth of 10 m. A 20-ton tamper with a diameter of 1.5 m and a height of 1.5 m is available. Assume a square pattern. More than one pass may be required. Estimate: 1. The required drop height 2. Spacing of the drops 3. Number of drops required 4. Number of passes required 5. SPT blow counts after improvement, and 6. Settlement.
Using the FE handbook, can I get a step by step on how to answer? Disregard slide 14
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