Provide USCS classification for the soil shown on the GSC below. Your answer must contain the required information in the table provided below.Find % gravel =%sand =%fines =D60 =D30=D10=Cu =Cc=Whats is the USCS Symbol = ? U.S Standard Sieve Series200 100 50 40 30 20 16 1083/8" 34" |1/2"+.908070604야302010Grain Size (mm)GRAIN SIZE DISTRIBUTIONCURVESOILSLab No.Sample No.DateName4.752.36eria85아o.6아0.425030아osroooro0.05아0.03아0.02아HO100soooPercent Passing Unified Soil Classification SystemUnified Soil Classification System(ASTM designation D-2487)Major DivisionGroupTypical NamesClassification CriteriaSymbolsC = D60/D10GW Well-graded gravels andgravel-sand mixtures,Greater than 4(D30)2C= D10x D60little or no finesBetween 1 and 3GPPoorly graded gravels andgravel-sand mixtures,little or no finesNot meeting both criteria for GWGM Silty gravels, gravel-sand-Atterberg limits plot below "A"line or plasticity index less than 4silt mixturesGC Clayey gravels, gravel-sand-clay mixturesAtterberg limits plot above "A"line and plasticity index greaterthan 7sw Well-graded sands andgravelly sands, little orno finesCu = D60/D10 Greater than 6(D30)?D10× D60Between 1 and 3SPPoorly graded sands andgravelly sands, litule orno finesSM Silty sands, sand-siltNot meeting both criteria for SWAtterberg limits plot below "A"line or plasticity index less than 4mixturesClayey sand, sand-claymixturesAtterberg limits plot above "A"line and plasticity index greaterSCthan 7Coarse-grained soilsMore than 50% retainedon 75 um (No. 200) sieveSandsGravelsMore than 50% of coarse50% or more of coarsefraction passes 4.75 mm (No. 4) sievefraction retained on 4.75 mm (No. 4) sieveGravels withSands with fines*More than 12%finesClean gravelsLess than 5% passClean sandsLess than 5%*More than12% pass75 um sievepass 75 um sievepass 75 um sieve75 µm sieve

Given data: Grain size distribution curve:

Provide USCS classification for the soil shown on the GSC below. Your answer must contain the required information in the table provided below. Find % gravel = %sand = %fines = D60 = D30= D10= Cu = Cc= Whats is the USCS Symbol = ?

Provide USCS classification for the soil shown on the GSC below. Your answer must contain the required information in the table provided below. Find % gravel = %sand = %fines = D60 = D30= D10= Cu = Cc= Whats is the USCS Symbol = ?

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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Concept explainers

Soil engineering for highway design

Soil engineering is a part of geotechnical engineering that deals with the characteristics of soil. It also helps to understand the behavior of the soil in different conditions. The basic concepts of soil are studied to check the strength, compressibility, and porosity of the soil. This makes soil engineering an important topic for civil engineering.

Question

Provide USCS classification for the soil shown on the GSC below. Your answer must contain the required information in the table provided below.

Find

% gravel =

%sand =

%fines =

D_{60 =}

D₃₀₌

D₁₀₌

C_{u =}

C_c=

Whats is the USCS Symbol = ?

U.S Standard Sieve Series
200 100 50 40 30 20 16 108
3/8" 34" |1/2"
+.
90
80
70
60
4야
30
20
10
Grain Size (mm)
GRAIN SIZE DISTRIBUTION
CURVE
SOILS
Lab No.
Sample No.
Date
Name
4.75
2.36
eri
a85아
o.6아
0.425
030아
osro
ooro
0.05아
0.03아
0.02아
HO100
sooo
Percent Passing

Unified Soil Classification System
Unified Soil Classification System
(ASTM designation D-2487)
Major Division
Group
Typical Names
Classification Criteria
Symbols
C = D60/D10
GW Well-graded gravels and
gravel-sand mixtures,
Greater than 4
(D30)2
C= D10x D60
little or no fines
Between 1 and 3
GP
Poorly graded gravels and
gravel-sand mixtures,
little or no fines
Not meeting both criteria for GW
GM Silty gravels, gravel-sand-
Atterberg limits plot below "A"
line or plasticity index less than 4
silt mixtures
GC Clayey gravels, gravel-
sand-clay mixtures
Atterberg limits plot above "A"
line and plasticity index greater
than 7
sw Well-graded sands and
gravelly sands, little or
no fines
Cu = D60/D10 Greater than 6
(D30)?
D10× D60
Between 1 and 3
SP
Poorly graded sands and
gravelly sands, litule or
no fines
SM Silty sands, sand-silt
Not meeting both criteria for SW
Atterberg limits plot below "A"
line or plasticity index less than 4
mixtures
Clayey sand, sand-clay
mixtures
Atterberg limits plot above "A"
line and plasticity index greater
SC
than 7
Coarse-grained soils
More than 50% retained
on 75 um (No. 200) sieve
Sands
Gravels
More than 50% of coarse
50% or more of coarse
fraction passes 4.75 mm (No. 4) sieve
fraction retained on 4.75 mm (No. 4) sieve
Gravels with
Sands with fines
*More than 12%
fines
Clean gravels
Less than 5% pass
Clean sands
Less than 5%
*More than
12% pass
75 um sieve
pass 75 um sieve
pass 75 um sieve
75 µm sieve

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Using the Unified Soil Classification System classify the following three soils: Sieve size Soil 1 Soil 2 Soil 3 % finer % finer % finer No.4 99 97 81 No.10 92 90 70 No.40 86 40 49 No.100 78 35 No.200 60 4 32 LL (%) PL (%) 42 40 60 20 30 28 Cu 34 1.8 800 1.6 0.95 0.2 Note: gravel size is defined by particle size between 4.75mm (#4 sieve) and 75mm. Equation of A-line: Pl = 0.73 (LL - 20%).
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4. Determine the USCS designation and soil description of a soil sample given the following sieve analysis test results: D10 = 0.2 mm = D30 0.73 mm D60 3.35 mm % passing #4 = 77.5 % passing #200 = 9.5 The fines are silty.