Construction of an embankment needs 400,000 yd3 of fill. The fill should be compacted to at least 88% of the standard Proctor maximum dry density obtained in the lab, which is gammad_d,max = 128 pcf, but the contractor plans to exceed that by 2% to ensure passing quality control. The fill may be obtained from two companies (A and B) with the following profiles. Company A Distance from borrow pit to embankment: 25 miles Cost of haul ($/yd3-mile): 0.50 Cost of fill material ($/yd3): 1.50 Borrow soil moisture content: 16% Specific gravity of solids: 2.70 Degree of saturation: 70% Company B Distance from borrow pit to embankment: 30 miles Cost of haul ($/yd3-mile): 0.40 Cost of fill material ($/yd3): 1.40 Borrow soil moisture content: 18% Specific gravity of solids: 2.65 Degree of saturation: 58% The total cost of haulage by company A (million $) The total cost of haulage by company B (million $) The relative compaction, CR, should account for the contractor's plan to exceed the minimum CR stipulated in the contract. For the volume Vs needed for the fill, V= (1+e) Vs needs to be excavated and hauled, charging the project at its own rate.

Construction of an embankment needs 400,000 yd3 of fill. The fill should be compacted to at least 88% of the standard Proctor maximum dry density obtained in the lab, which is gammad_d,max = 128 pcf, but the contractor plans to exceed that by 2% to ensure passing quality control. The fill may be obtained from two companies (A and B) with the following profiles. Company A Distance from borrow pit to embankment: 25 miles Cost of haul ($/yd3-mile): 0.50 Cost of fill material ($/yd3): 1.50 Borrow soil moisture content: 16% Specific gravity of solids: 2.70 Degree of saturation: 70% Company B Distance from borrow pit to embankment: 30 miles Cost of haul ($/yd3-mile): 0.40 Cost of fill material ($/yd3): 1.40 Borrow soil moisture content: 18% Specific gravity of solids: 2.65 Degree of saturation: 58% The total cost of haulage by company A (million $) The total cost of haulage by company B (million $) The relative compaction, CR, should account for the contractor's plan to exceed the minimum CR stipulated in the contract. For the volume Vs needed for the fill, V= (1+e) Vs needs to be excavated and hauled, charging the project at its own rate.

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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