Principles of Geotechnical Engineering (MindTap Course List)
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 6, Problem 6.11P

(a)

To determine

Find the volumes of each borrow pit soil required to meet the specification of the embankment site.

(b)

To determine

Find the most cost effective borrow pit.

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A proposed embankment fill requires 7500 m3 of compacted soil. The void ratio of thecompacted fill is specified as 0.7. Soil can be transported from one of the four borrowpits, as described in the following table. The void ratio, specific gravity of soil solids,and the cost per cubic meter for moving the soil to the proposed construction site areprovided in the table.a. Determine the volume of each borrow pit soil required to meet the specification ofthe embankment site.b. Make the necessary calculations to select the borrow pit which would be most costeffective.
A proposed embankment fill requires 7500 m³ of compacted soil. The void ratio of the compacted fill is specified as 0.7. Soil can be transported from one of the four borrow pits, as described in the following table. The void ratio, specific gravity of soil solids, and the cost per cubic meter for moving the soil to the proposed construction site are provided in the table. a. Determine the volume of each borrow pit soil required to meet the spec- ification of the embankment site. b. Make the necessary calculations to select the borrow pit which would be most cost-effective. Borrow pit Void ratio GS Cost ($/m³) I 0.85 2.66 11 II 0.92 2.69 III 1.21 2.71 9 IV 0.89 2.73 10 Q
A proposed embankment fill required 8000 m3 of compacted soil. The void ratio of the compacted fill is specified to be 0.6. Four available borrow pits are shown below along with the void ratios of the soil and the cost per cubic meter for moving the soil to the proposed construction site. Make the necessary calculations to select the pit from which the soil should be brought to minimize the cost. Assume Gs to be the same for all borrow-pit soil.
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