lassify the soil according to the USDA textural classification system. The soil has particle size distribution of Gravel – 21% Sand – 12% Silt – 35% Clay – 32% a. Calculate the modified percentage of sand. b. Compute the modified percentage of silt. c. What is the soil classification

2. Prove n-e/(1+e) and e-n/(1-n) based on definitions of void ratio and porosity. 3. Classify the following soils according to the unified soil classification system: group symbols and typical names Soil A B Percent passing U.S. sieve No. 4 No. 10 No. 20 No. 40 No. 60 No. 100 No. 200 95 86 65 52 46 38 25 98 95 88 82 75 65 100 LL PL 38 65 22 58

Classify the soil according to the USCS 1. Percent passing No. 4 Sieve = 70 Percent passing No. 200 Sieve = 30 Liquid Limit = 33 Plasticity Index = 12 2. Percent passing No. 10 Sieve = 100 Percent passing No. 40 Sieve = 80 Percent passing No. 200 Sieve = 58 Liquid Limit = 30 Plasticity Index = 10 Classify the soil according to AASHTO Description SOIL A SOIL B SOIL C Percent finer than No. 10 Sieve 100 95 88 Percent finer than No. 40 Sieve 80 75 Percent finer than No. 200 Sieve 58 34 Liquid Limit 30 60 39 Plasticity Index 10 40 12

show your solutions

The amount of soil retained in the #4 sieve is 45g, soil retained in the pan is 108g  and the total mass of dry soil is 500g. What is the percentage of sand in the soil sample given in number 1 based on USCS specifications? Select one: a. 22% b. none of the choices c. 69% d. 9% e. 91%

The sieve analysis data for a granular soil are given below. % passing or finer 19 mm sieve = 100%% passing or finer 4.75 mm (4 sieve) = 61%% passing or finer 0.075mm (200 sieve) = 16% What are the percentages of gravels, sands and fines within this soil, based on the Unified Soil Classification System?

Classify the following soils by AASHTO classification system. Percent finer than (sieve analysis) Liquid Limit Plasticity Index Soil No. 4 No. 10 No. 40 No. 200 1 95 82 55 41 32 12 94 80 51 15 26 12 Silty-Clay Materials (more than 35 % passing No. 200 sieve) A-7 General Granular Materials Highly Organic Classification (35 % or less passing No 200 sieve) A-1 A-2 Group Classification A-1-a A-1-b A-3 A-2-4 A-2-5 A-2-6 A-2-7 A-4 A-5 A-6 A-7-5 A-8 A-7-6 Sieve Analysis percent passing: # 10 < 50 # 40 # 200 S 30 5 50 s 51 <15 25 $10 <35 35 s 35 35 236 2 36 2 36 236 Characteristics of fraction passing #40 Liquid limit Plasticity index < 40 241 40 241 NP3 <40 241 40 241 2 11 11 10 <10 211 211 < 10 <6 Stone <10 Usual types of signifcant constituent materials fragments; gravel and sand Fine Peat or sand Silty or clayey gravel and sand Sity soils Clayey soils muck General ratins as Excellent to good Fair to Poor Unstable subgrade VI VI VI VI VI

Show your complete solution so I can follow thanks

Classify the following soils by the AASHTO classification system. Give the group index for each soil.

Classify a soil with 30% clay, 15% silt, 32% sand, and 23% gravel. 100 90 10 80, 20 30 70, Clay 60 40 50 50 Sandy 40 Clay Sitty Clay 60 Silty Clay Loam SandyClay Loám 30 Çlay Loam 20, 70 80 Loam Sift Loam Sandy Loan bamy San 10 90 Šilty /San 100 90 80 70 60 50 40 30 20 10 100 Percentage by Weight Sand a. Silt Loam b. Sandy Clay Loam c. Sandy Loam O d. Clay Loam Percentage by Weight Silt Percentage by Weight Clay