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 PassingNo. 44.760100No. 82.380100No. 102.00095No. 200.84081No. 400.42074No. 600.25069No. 1000.15055No. 2000.07551Characteristics of No. 40 FractionLL48PL40 A.A-5(3) B.A-7-5(4) C.None of these. D.A-5(4) E.A-7-6(3) General classificationSilt-clay materials (more than 35% of total sample passing No. 200)A-7A-7-5*Group classificationA-4A-5A-6A-7-6Sieve analysis (percent passing)No. 10No. 40No. 20036 min.36 min.36 min.36 min.Characteristics of fractionpassing No. 40Liquid limitPlasticity index40 max.41 min.40 max.11 min.41 min.10 max.10 max.11 min.Usual types of significantconstituent materialsSilty soilsClayey soilsGeneral subgrade ratingFair to poor*For A-7-5, PI < LL – 30*For A-7-6, PI > LL – 30

Answered: The given data shows a sieve analysis…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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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	100
No. 10	2.000	95
No. 20	0.840	81
No. 40	0.420	74
No. 60	0.250	69
No. 100	0.150	55
No. 200	0.075	51
Characteristics of No. 40 Fraction
LL	48
PL	40

	A.	A-5(3)
	B.	A-7-5(4)
	C.	None of these.
	D.	A-5(4)
	E.	A-7-6(3)

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-6
A-7-6
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.
11 min.
41 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

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