General classification Granular materials (35% or less of total sample passing No. 200) A-1 A-2 Group classification A-1-a A-1-b A-3 A-2-4 А-2-5 А-2-6 А-2-7 Sieve analysis (percent passing) No. 10 50 max. No. 40 No. 200 30 max. 15 max. 50 max. 25 max. 51 min. 10 max. 35 max. 35 max. 35 max. 35 max. Characteristics of fraction passing No. 40 Liquid limit Plasticity index 40 max. 10 max. 41 min. 40 max. 41 min. 6 max. NP 10 max. 11 min. 11 min. Usual types of Stone fragments, gravel, and sand Fine sand Silty or clayey gravel and sand significant constituent materials General subgrade rating Excellent to good
General classification Granular materials (35% or less of total sample passing No. 200) A-1 A-2 Group classification A-1-a A-1-b A-3 A-2-4 А-2-5 А-2-6 А-2-7 Sieve analysis (percent passing) No. 10 50 max. No. 40 No. 200 30 max. 15 max. 50 max. 25 max. 51 min. 10 max. 35 max. 35 max. 35 max. 35 max. Characteristics of fraction passing No. 40 Liquid limit Plasticity index 40 max. 10 max. 41 min. 40 max. 41 min. 6 max. NP 10 max. 11 min. 11 min. Usual types of Stone fragments, gravel, and sand Fine sand Silty or clayey gravel and sand significant constituent materials General subgrade rating Excellent to good
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Yiren was given a soil sample which yields the following passing percentage for different sieves.
| Sieve No. | Diameter (mm) | Percent Passing (%) |
| No. 4 | 4.760 | 99 |
| No. 8 | 2.380 | 85 |
| No. 10 | 2.000 | 71 |
| No. 20 | 0.840 | 65 |
| No. 40 | 0.420 | 63 |
| No. 60 | 0.250 | 55 |
| No. 100 | 0.149 | 50 |
| No. 200 | 0.074 | 32 |
Characteristics of Fraction Passing No. 40
LL = 41
PL = 16
What will be this soil's resulting group index?
Transcribed Image Text:General classification
Granular materials (35% or less of total sample passing No. 200)
A-1
A-2
Group classification
A-1-a
A-1-b
A-3
A-2-4
А-2-5
А-2-6
А-2-7
Sieve analysis
(percent passing)
No. 10
50 max.
No. 40
No. 200
30 max.
15 max.
50 max.
25 max.
51 min.
10 max.
35 max.
35
max.
35 max.
35 max.
Characteristics of
fraction passing
No. 40
Liquid limit
Plasticity index
40 max.
10 max.
41 min.
40 max.
41 min.
6 max.
NP
10 max.
11 min.
11 min.
Usual types of
Stone fragments,
gravel, and sand
Fine
sand
Silty or clayey gravel and sand
significant
constituent
materials
General subgrade
rating
Excellent to good
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