2. The following results were obtained from sieve analysis of sediment samples A and B. Hydrometer tests were conducted on the materials that passed through sieve 200 for Soils A and the ratio of clay to silt is 4:1. Plot the particle size distribution curves on the same graph. Determine the effective size d₁0, average sediment size d50, and compute for the gradation of the sediment mixture og and gradation coefficient Gr. Sieve No. Opening (mm) 4 10 20 40 100 200 pan 4.75 2.0 0.85 0.425 0.15 0.075 Mass retained (g) Sediment Sample A 0.0 20.2 25.7 40.4 18.1 27.2 68.2 Sediment Sample B 0.0 48.2 19.6 60.3 37.2 22.1 5.6

2. The following results were obtained from sieve analysis of sediment samples A and B. Hydrometer tests were conducted on the materials that passed through sieve 200 for Soils A and the ratio of clay to silt is 4:1. Plot the particle size distribution curves on the same graph. Determine the effective size d₁0, average sediment size d50, and compute for the gradation of the sediment mixture og and gradation coefficient Gr. Sieve No. Opening (mm) 4 10 20 40 100 200 pan 4.75 2.0 0.85 0.425 0.15 0.075 Mass retained (g) Sediment Sample A 0.0 20.2 25.7 40.4 18.1 27.2 68.2 Sediment Sample B 0.0 48.2 19.6 60.3 37.2 22.1 5.6

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.8P

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Sieve no.	4	10	20	40	100	200	pan
Opening (mm)	4.75	2.0	0.85	0.425	0.15	0.075
Mass retained (g)
Sediment sample A	0.0	20.2	25.7	40.4	18.1	27.2	68.2
Sediment sample B	0.0	48.2	19.6	60.3	37.2	22.1	5.6