The following data has been obtained from a standard Proctor test conducted on a silty clay soil. The maximum dry unit weight = 17.5 kN/m³; Optimum water content = 12.5% The construction specifications require a relative compaction of 95% and field compaction water content to be within ±2% if the optimum. A sand cone test was performed to measure the dry unit weight and water content achieved during the field compaction operation. The volume of the test hole has been already been calculated from the sand cone data Volume of test hole = 1.5x10-3 m³. Total weight of moist soil removed from hole = 2.73 kg Weight of soil removed from hole after drying = 2.46 kg Use conversion 1.0kg = 0.01 KN Determine the following: a. Field water content (%) = ... Report to ONE decimal (Show work in hand-calc sheet) b. Has the compaction specifications met with respect to compaction water content? Say YES or NO c. Field dry unit weight (kN/m³) = [ ... Report to ONE decimal (Show work in hand-calc sheet)

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The following data has been obtained from a standard Proctor test conducted on a silty clay soil.
The maximum dry unit weight = 17.5 kN/m³; Optimum water content = 12.5%
The construction specifications require a relative compaction of 95% and field compaction water content to be within ±2% if the optimum.
A sand cone test was performed to measure the dry unit weight and water content achieved during the field compaction operation. The volume of
the test hole has been already been calculated from the sand cone data
Volume of test hole = 1.5x10-3 m³.
Total weight of moist soil removed from hole = 2.73 kg
%3D
Weight of soil removed from hole after drying = 2.46 kg
Use conversion 1.0kg = 0.01 KN
Determine the following:
%3D
a. Field water content (%) =
Report to ONE decimal (Show work in hand-calc sheet)
b. Has the compaction specifications met with respect to compaction water content? Say YES or NO
c. Field dry unit weight (kN/m3) =
Report to ONE decimal (Show work in hand-calc sheet)
d. Field relative compaction (%) =
Report to ONE decimal (Show work in hand-calc sheet)
e. Has the compaction specifications met with respect to relative compaction? Say YES or NO
Transcribed Image Text:The following data has been obtained from a standard Proctor test conducted on a silty clay soil. The maximum dry unit weight = 17.5 kN/m³; Optimum water content = 12.5% The construction specifications require a relative compaction of 95% and field compaction water content to be within ±2% if the optimum. A sand cone test was performed to measure the dry unit weight and water content achieved during the field compaction operation. The volume of the test hole has been already been calculated from the sand cone data Volume of test hole = 1.5x10-3 m³. Total weight of moist soil removed from hole = 2.73 kg %3D Weight of soil removed from hole after drying = 2.46 kg Use conversion 1.0kg = 0.01 KN Determine the following: %3D a. Field water content (%) = Report to ONE decimal (Show work in hand-calc sheet) b. Has the compaction specifications met with respect to compaction water content? Say YES or NO c. Field dry unit weight (kN/m3) = Report to ONE decimal (Show work in hand-calc sheet) d. Field relative compaction (%) = Report to ONE decimal (Show work in hand-calc sheet) e. Has the compaction specifications met with respect to relative compaction? Say YES or NO
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