Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion
Discussion Forum : Soil Mechanics and Foundation Engineering - Section 3 (Q.No. 19)
19.
A soil sample has passing 0.075 mm sieve = 60% liquid limit = 65% and plastic limit = 40%. The group index of the soil, is
Discussion:
48 comments Page 3 of 5.
Ravi Kant said:
9 years ago
a = 60-35 = 25%
b = 60-15 = 45%
c = 65-40 = 25%
d = PI-10 = (65-40)-10 = 15%.
GI = 0.2a + 0.005ac + 0.01bd = 0.2 * 25 + 0.005 * 25 * 25 + 0.01 * 45 * 15 = 14.875.
b = 60-15 = 45%
c = 65-40 = 25%
d = PI-10 = (65-40)-10 = 15%.
GI = 0.2a + 0.005ac + 0.01bd = 0.2 * 25 + 0.005 * 25 * 25 + 0.01 * 45 * 15 = 14.875.
Pinkesh said:
8 years ago
GI = . 2a +. 005ac +. 01bd.
a = 25,
b = 45, bt not more than 40, = 40,
c = 25, bt nt more thn 20, = 20,
d = 15,
GI = . 2*25 +. 005*25*20 +. 01*40*15 = 13.5.
a = 25,
b = 45, bt not more than 40, = 40,
c = 25, bt nt more thn 20, = 20,
d = 15,
GI = . 2*25 +. 005*25*20 +. 01*40*15 = 13.5.
MN Yogi said:
6 years ago
GI = .2a +.005ac +.01bd.
a = 25,
b = 45, bt not more than 40, = 40,
c = 25, bt nt more thn 20, = 20,
d = 15,
GI = .2 * 25 +.005 * 25 * 20 +.01 * 40 * 15 = 13.5.
a = 25,
b = 45, bt not more than 40, = 40,
c = 25, bt nt more thn 20, = 20,
d = 15,
GI = .2 * 25 +.005 * 25 * 20 +.01 * 40 * 15 = 13.5.
Somer said:
7 years ago
If soil passing in 75micron is 15%, plasticity index is 6%, not mentioned the liquid limit, then what is the group index of soil?
Chandan sen said:
7 years ago
a=60-35=25,
b=60-15=45 not more then 40 so,
b=40,
c=65-40=25,
d=(65-40)-10=15,
GI=0.2*25+0.01*40*15+0.005*25*25=14.125.
b=60-15=45 not more then 40 so,
b=40,
c=65-40=25,
d=(65-40)-10=15,
GI=0.2*25+0.01*40*15+0.005*25*25=14.125.
Naresh said:
7 years ago
No @All.
The group index should be rounded to nearest whole number suppose GI = 14.125 it should be rounded off to 14.
The group index should be rounded to nearest whole number suppose GI = 14.125 it should be rounded off to 14.
Parteek said:
8 years ago
PI in the formula is Plasticity Index= LL-PL not Plastic limit which some person are taking in above answers.
Kvk said:
6 years ago
Correct @Pritam Yadav.
a & b should not be greater than 40.
c & d should not be greater than 20.
a & b should not be greater than 40.
c & d should not be greater than 20.
GiRi said:
9 years ago
GI = (F-35) (0.2 + 0.05(wL - 40)) + 0.01(F - 15)(Ip - 10).
Where,
Ip = wL - Wp.
We get answer is 12.
Where,
Ip = wL - Wp.
We get answer is 12.
RAJEEV said:
5 years ago
GI = 0.2a + 0.005ac + 0.01bd.
GI = 0.2(F-35) + 0.005(F-35)(WL-40) + 0.01(F-15)(IP-10).
GI = 0.2(F-35) + 0.005(F-35)(WL-40) + 0.01(F-15)(IP-10).
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