underlying the clay was under artesian An exploratory drill hole was made in a 32%. It was observed that the sand layer saturated stiff clay having a water content of pressure water in the drill hole rose to a height caturated stiff clay having a water content of 0% It was observed that the sand layer underlying the clay was under artesian of 4 m. above the top of the sand layer. If an Open excavation is to be made in the clay ground surface -exploratory drill hole Saturated clay 8m 0-32% 4m- G=2.70 B. Sand 3m. a) Determine the void ratio of clay. b) Determine the saturated unit weight of clay. c) How deep can the excavation proceed before the bottom of the saturated clay heaves or when its effective stress is zero.
underlying the clay was under artesian An exploratory drill hole was made in a 32%. It was observed that the sand layer saturated stiff clay having a water content of pressure water in the drill hole rose to a height caturated stiff clay having a water content of 0% It was observed that the sand layer underlying the clay was under artesian of 4 m. above the top of the sand layer. If an Open excavation is to be made in the clay ground surface -exploratory drill hole Saturated clay 8m 0-32% 4m- G=2.70 B. Sand 3m. a) Determine the void ratio of clay. b) Determine the saturated unit weight of clay. c) How deep can the excavation proceed before the bottom of the saturated clay heaves or when its effective stress is zero.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
8. An exploratory drill hole was made in a saturated stiff clay having a water content of 32%. It was observed that the sand layer underlying the clay was under artesian pressure water in the drill hole rose to a height of 4 m. above the top of the sand layer. If an open excavation is to be made in the clay.
(See picture below)
- Determine the void ratio of clay. (Answer: 0.864)
- Determine the saturated unit weight of clay. (Answer: 18.76 kN/m3)
- How deep can the excavation proceed before the bottom of the saturated clay heaves or when its effective stress is zero. (Answer: 5.91 m)
Transcribed Image Text:underlying the clay was under artesian
open excavation is to be made in the clay.
saturated stiff clay having a water content of
An exploratory drill hole was made in a
pressure water in the drill hole rose to a height
32%. It was observed that the sand layer
PROBLEMS for EXERCISES
8
Problem:
Cr
Hy
underlying the clay was under artesian
a)
of 4 m. above the top of the sand layer. If an
ground surface
exploratory drill hole
Saturated clay:
8m
0=32%
G=2,70
B.
4m
Sand
3m.
a) Determine the void ratio of clay.
b) Determine the saturated unit weight of
clay.
c) How deep can the excavation proceed
before the bottom of the saturated clay
heaves or when its effective stress is
zero.
Problem:
From the figure choun
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