Sieve Soil A Soil B 3/4 in. 100 3/8 in 95 No. 4 85 --- 100 75 16 94 63 30 70 51
Sieve Soil A Soil B 3/4 in. 100 3/8 in 95 No. 4 85 --- 100 75 16 94 63 30 70 51
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question

Transcribed Image Text:3.
Given the following grain size curve data for soil A and B:
Sieve
Soil A
Soil B
3/4 in.
100
3/8 in
95
No. 4
85
.--
8.
100
75
16
94
63
30
70
51
50
30
40
100
10
30
200
20
0.020 mm
10
0.010
8.
0.005
6.
Plot the grain size curve of A and B
What is the percentage of gravel, sand, silt and clay size in A and B soils (Using
ASTM, AASHTO and USCS)?
What are the Dso, C, and C, values of soils A and B? Are the soils well or poorly
graded?
a.
b.
C.
Expert Solution

Step 1
Data given
Sieve | Sieve size (mm) | Percentage Finer | |
Soil A | Soil B | ||
3/4 in | 19 | 100 | |
3/8 in | 9.5 | 95 | |
No. 4 | 4.75 | 85 | |
8 | 2.36 | 100 | 75 |
16 | 1.18 | 94 | 63 |
30 | 0.6 | 70 | 51 |
50 | 0.3 | 30 | 40 |
100 | 0.15 | 10 | 30 |
200 | 0.075 | 2 | 20 |
0.02 mm | 0.02 | 10 | |
0.01 mm | 0.01 | 8 | |
0.005 mm | 0.005 | 6 |
Find :
(a) plot grain size curve of A and B
(b) % of gravel, sand, silt and clay in A and B using ASTM, AASHTO, USCS
(c) Find D50, Cu , CC values of soil A and B
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