Answered: A pit of volume 16x104 cum is to be…

A pit of volume 16x104 cum is to be filled in such a way that its void ratio comes out to be 0.75. If the soil to be borrowed has void ratio of 1.5 then determine the volume that should be extracted.

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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Concept explainers

Pricing Excavation and Backfill

Backfill, in construction, is the activity of returning the soil and gravel that are removed during building construction or using them again to toughen and support the foundation of the building or any other structural component.

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A pit of volume 16x10⁴cum is to be filled in such a way that its void ratio comes out to be 0.75. If the soil to be borrowed has void ratio of 1.5 then determine the volume that should be extracted.

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A proposed earth fill for a construction of a US highway requires 371,000 cubic feet of soil. The soil will be compacted to a void ratio of 0.75 when it will be placed on the fill. There are 5 borrow pits (see table below). Which barrow pit will have the highest volume of soil for the project and what is the volume in cubic meters? Which borrow pit will provide the least cost, and how much is it?
A soil deposit has a void ratio of 0.9. Its void ratio is reduced to 0.6 by compaction. Determine the percent reduction of volume by this compaction.
Q1// A soil sample was taken from a pit and its total unit weight was equal to KN (17.17) and its water content was 12% and the specific gravity of m3 soil particles was (2.7) and then this pit was filled with compacted soil with a water content of 18% and the dry density is equal to (16.19 KN m3 Calculate the following for 1000 m³of fill soil? (yw: KN. = 9.81 m3 A)) The volume of soil to be extracted from the pit in cubic meters. B)) The weight of water that can be added to reach the new water content C)) The ratio of voids to the soil in the pit
Table 1 below is the result of compaction results. Please evaluate the correct combination of missing data. Table 1: Compaction test results Water content (%) 8.00 III IV Bulk Density II 2.35 2.09 (Mg/m³) Dry Density (Mg/m³) 1.89 2.08 1.76 || A B Answer A B с D I 5.00 1.87 I 1.68Mg/m³ 1780kg/m³ 1.80Mg/m³ 1.78Mg/m³ 2.04Mg/m³ 2.08Mg/m³ 2080kg/m³ 2040kg/m³ III 13% 11% 12% 13% 16.00 2.20 1.90 IV 19% 20% 19% 19%
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