a) What is unified classification of soil? Explain the classification and nomenclature of( Gravels, Sands, Silts and Clays).
(5 marks)
a) What is unified classification of soil? Explain the classification and nomenclature of( Gravels, Sands, Silts...
what is the difference between British soil classification system and unified soil classification system.
Classify soils given using Soil-a) the Unified Classification System and Soil-b) the AASHTO System. Give the group symbols (USCS) and group indices (AASHTO) and a short non- technical description of the soil. Sieve quantities all given in percent (%) finer.
Classify Soil D by the Unified Classification System. Question 6 options: sandy silt gravely lean clay sandy lean clay well-graded gravel
what are the classification of soil based on sensitivity
stem. Give group symbol and group name. 5.7 Classify the following soils using the Unified soil classification system. Give the group symbols and the group names Percent passing Sieve size E A C No, 4 94 98 100 100 100 No. 10 63 86 100 100 100 No. 20 21 50 98 100 100 No. 40 10 28 93 99 94 No. 60 7 95 18 88 82 No. 100 14 90 66 8.5 ON 2 29 d or o...
BONUS QUESTIONS [10 MARKS] (a) Explain the following observation. Provide a step-by-step unified mechanism for the formation of each product [5 marks] Bu-Li Leer Br M
Ull ClAssification system. uestion 6 What is the co ency of a soil having natural water content of 25 % if its shrinkage, plastic, nsist liquid limits are 10 %, 20% and 30% respectively.
Problem 3 - Soil Classification (15 pts) For the following soils, classify each using the USCS classification. Plasticity %passing #4 sieve %passing #200 sieve Group Symbol 100 95 Soil clay silt sand gravel Sample A 12 83 5 0 B 4 25 665 C 4 25 71 D5 59 360 E 18 49 303 95 29 Liquid Limit 66. 3 31.4 36 60. 9 49 19.9 6 7.6 23 100 29 1 100 97 64 67 |
1. When lime is added to an acid soil, explain what it does to 1) soil pH (and what is the mechanism by which it changes the pH); 2) cation exchange capacity (Hint: Think back to pH-dependent charge to understand the effect on cation exchange capacity.) and; 3) the composition of exchangeable cations. 2. Why do some soils need more lime to raise their pH than other soils? Explain your answer in terms of buffering capacity, and active vs. reserve...
Classify inorganic soil A in the figure using the USCS classification system if the soil has a liquid limit of 44 and a plastic limit of 21. Using the chart below ] བན་བབསྔ Percent finer by weight 0t 001 10 0.1 ་་། Particle size (mm) 001 AT101 USS CS SYSTEM Groepe Le dery Na 20 CIS plus No. 200 1 5-25 plas No 20 and 2 $ gavel P> 7 and por and vel pravel Sandy loan clay Sanly leance...