The field compaction of an earthwork was checked by an inspection engineer. In the laboratory test, the soil gives a maximum dry density of 1.521 gram/cc at optimuin moisture content of 14.8%. Construction specifications requires that the soil compacted dry density imust be at least 95% of the maximum dry density obtained from laboratory within t 0.2% of optimum moisture content. The following data were obtained in the field using the sand cone test: Volume of soil excavated = 1245-cm Weight of soil excavated = 2260 grams Dry weight of soil = 1810 grams What is the field unit weight of the soil? A. 1.815 g/cc B. 1.857 g/cc What is the in situ moisture content of the soil? A. 25.14% B. 23.78% C. 1.921 g/cc D. 1.784 g/cc C. 26.32% D. 24.86% Determine the relative compaction of the soil and whether it is adequate or not. A. 95.58, not adequate B. 95.18, adequate C. 95.18, not adequate D. 95.58, adequate
The field compaction of an earthwork was checked by an inspection engineer. In the laboratory test, the soil gives a maximum dry density of 1.521 gram/cc at optimuin moisture content of 14.8%. Construction specifications requires that the soil compacted dry density imust be at least 95% of the maximum dry density obtained from laboratory within t 0.2% of optimum moisture content. The following data were obtained in the field using the sand cone test: Volume of soil excavated = 1245-cm Weight of soil excavated = 2260 grams Dry weight of soil = 1810 grams What is the field unit weight of the soil? A. 1.815 g/cc B. 1.857 g/cc What is the in situ moisture content of the soil? A. 25.14% B. 23.78% C. 1.921 g/cc D. 1.784 g/cc C. 26.32% D. 24.86% Determine the relative compaction of the soil and whether it is adequate or not. A. 95.58, not adequate B. 95.18, adequate C. 95.18, not adequate D. 95.58, adequate
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter15: Slope Stability
Section: Chapter Questions
Problem 15.3P
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Transcribed Image Text:The field compaction of an earthwork was checked by an inspection
engineer. In the laboratory test, the soil gives a maximum dry density of 1.521
gram/cc at optimuin moisture content of 14.8%. Construction specifications
requires that the soil compacted dry density must be at least 95% of the
maximum dry density obtained from laboratory within t 0.2% of optimum
moisture content.
The following data were obtained in the field using the sand cone test:
Volume of soil excavated = 1245-cm
Weight of soil excavated = 2260 grams
Dry weight of soil = 1810 grams
22 What is the field unit weight of the soil?
A. 1.815 g/cc
B. 1.857 g/cc
C. 1.921 g/cc
D. 1.784 g/cc
23 What is the in situ moisture content of the soil?
A. 25.14%
B: 23.78%
C. 26.32%
D. 24.86%
24
Determine the relative compaction of the soil and whether it is adequate or
not.
A. 95.58, not adequate
B. 95,18, adequate
C. 95.18, not adequate
D. 95.58, adequate
Transcribed Image Text:An open channel is to have a discharge of 37 m³/s and average velocity
of 1.5 m/s. Find the depth the trapezoidal open channel for the following
conditions:
Most efficient section.
1
A. 4.25 m
В. 3.17 m
2 Base width is twice the depth and side slope of 2H:1V.
А. 2.48 m
B. 2.87 m
Minimum seepage with sides inclined 62 with the horizontal.
А. 2.9 m
В. 3.2 m
C. 3.96 m
D. 3.77 m
C. 3.54 m
D. 3.12 m
C. 2.5 m
D. 2.7 m
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