Usual types of significant Stone fragments, gravel, and sand Fine Silty or clayey gravel and sand sand constituent materials General subgrade rating Excellent to good General classification Silt-clay materials (more than 35% of total sample passing No. 200) A-7 A-7-5 Group classification A-4 A-5 A-7-6 A-6 Sieve analysis (percent passing) No. 10 No. 40 No. 200 36 min. 36 min. 36 min. 36 min. Characteristics of fraction passing No. 40 Liquid limit Plasticity index 40 max. 41 min. 40 max 41 min. 11 min. 10 max. 10 max. 11 min, Usual types of significant constituent materials Silty soils Clayey soils General subgrade rating Fair to poor *For A-7-5, PI < LL- 30 "For A-7-6, PI >> LL - 30 O A. A-3(0) О В. А2-5(0) OCA-1-a(0) O D.A-1-b(0) O E.A2-4(0)
Usual types of significant Stone fragments, gravel, and sand Fine Silty or clayey gravel and sand sand constituent materials General subgrade rating Excellent to good General classification Silt-clay materials (more than 35% of total sample passing No. 200) A-7 A-7-5 Group classification A-4 A-5 A-7-6 A-6 Sieve analysis (percent passing) No. 10 No. 40 No. 200 36 min. 36 min. 36 min. 36 min. Characteristics of fraction passing No. 40 Liquid limit Plasticity index 40 max. 41 min. 40 max 41 min. 11 min. 10 max. 10 max. 11 min, Usual types of significant constituent materials Silty soils Clayey soils General subgrade rating Fair to poor *For A-7-5, PI < LL- 30 "For A-7-6, PI >> LL - 30 O A. A-3(0) О В. А2-5(0) OCA-1-a(0) O D.A-1-b(0) O E.A2-4(0)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:Usual types of
significant
constituent
Stone fragments,
gravel, and sand
Fine
Silty or clayey gravel and sand
sand
materials
General subgrade
rating
Excellent to good
General classification
Silt-clay materials (more than 35% of total sample passing No. 200)
A-7
A-7-5
A-7-6
Group classification
A-4
A-5
A-6
Sieve analysis (percent passing)
No. 10
No. 40
No. 200
36 min.
36 min.
36 min.
36 min.
Characteristics of fraction
passing No. 40
Liquid limit
Plasticity index
40 max.
41 min.
40 max.
41 min.
10 max.
10 max.
11 min.
11 min.
Usual types of significant
constituent materials
Silty soils
Clayey soils
General subgrade rating
Fair to poor
*For A-7-5, PI < LL - 30
"For A-7-6, PI >> LI. – 30
O A. A-3(0)
O B. A-2-5(0)
O C.A-1-a(0)
O D.A-1-b(0)
O E. A-2-4(0)
ASUS
F1
F2
F3
F4
F5
F6
F7
FB
&
5
6
7
Transcribed Image Text:Question 42
The given data shows a sieve analysis of a soil sample. Classify the soil using AASHTO Method. Tables are provided below.
Sieve No. Diameter (mm) Percent Passing
No. 4
4.760
100
No. 8
2.380
88
No. 10
2.000
69
No. 20
0.840
61
No. 40
0.420
56
No. 60
0.250
43
No. 100
0.150
19
No. 200
0.075
9.
Characteristics of No. 40 Fraction
LL
PL
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
A-2-5
A-2-6
A-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.
41 min.
40 max.
41 min.
6 max
NP
10 max.
10 max.
11 min.
11 min.
Usual types of
significant
constituent
Stone fragments.
gravel, and sand
Fine
Silty or clayey gravel and sand
sand
materials
SUS
F1
F2
F3
F4
FS
F6
F7
F8
24
4
%
&
5
R
Y
因
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