Question

(Time limited 70mins)

Q.1 A dried soil was subjected to particle size analysis with the following results:

Results of Sieve analysis

Sieve (mm)	Mass Retained (g)	Mass Retained (%)	Percent Passing (%)
60.000	29.6	MR1	PP1
6.000	13.0	MR2	PP2
2.000	11.6	MR3	PP3
0.600	19.5	MR4	PP4
0.063	11.4	MR5	PP5
Pan	3.7	MR6	PP6

Determine the percentage (%) for gravel (G):

Q.2 Determine the percentage (%) for sand (S):

Q.3 Classify the fine-grained portion of the soil sample by using the Plasticity Chart.

Provide your answer by using the format listed in the table below.

i.e. if the answer is CH, enter 3 as your answer.

Classification of fine-grained portion of the soil

No.	Classification	No.	Classification
1	CL	6	ML
2	CI	7	MI
3	CH	8	MH
4	CV	9	MV
5	CE	10	ME

Q.4 Determine the coefficient of uniformity (C_u):

Q.5 Determine the coefficient of curvature (C_c):

Q.6 Determine the effective size, D₁₀ in mm:

Q.7 Determine the effective size, D₃₀ in mm:

Q.8 Determine the effective size, D₆₀ in mm:

Q.9 Determine the plastic index of the soil sample if the plastic limit (PL) and the liquid limit (LL) are 15.1 and 49.1, respectively:

Q.10

Classify the fine-grained portion of the soil sample by using the British Soil Classification System.

Provide your answer by using the format listed in the table below.

i.e. if the answer is SCL, enter 2021 as your answer.

British Soil Classification System

No.	Classification	No.	Classification	No.	Classification	No.	Classification
1100	GW	2110	SWM	1015	GME	2013	SMH
1200	GP	2120	SWC	1021	GCL	2014	SMV
2100	SW	2210	SPM	1022	GCI	2015	SME
2200	SP	2220	SPC	1023	GCH	2021	SCL
1110	GWM	1011	GML	1024	GCV	2022	SCI
1120	GWC	1012	GMI	1025	GCE	2023	SCH
1210	GPM	1013	GMH	2011	SML	2024	SCV
1220	GPC	1014	GMV	2012	SMI	2025	SCE

Answer 1