What is U-line for Atterberg?
What is U-line for Atterberg?
A U-Line is also defined as the upper limit of the correlation between plasticity index and liquid limit of the soil. If the test results of soils fall above the U-line then results are considered faulty and experiment should be repeated.
What is a-line and U-line on plasticity chart?
The plasticity chart comprises of two important lines, A-line and U-line. A-line is an empirically chosen line which separates the chart between clays and silts; soils that fall above A-line are classified as clays and that falling below as silts. A-line is given by the equation PI=0.73(LL-20).
What is MIT system in soil classification?
MIT Soil classification is the classification system devised by Massachusetts Institute of Technology, the USA for dividing soil into different classes. In this classification, the particles larger than 200 mm will be considered as boulders and larger 200 is cobble.
Who developed USCS?
Item Description
| Title | USCS and the USDA soil classification system: Development of a mapping scheme |
|---|---|
| Organizational author | United States. Army. Corps of Engineers Engineer Research and Development Center (U.S.) Cold Regions Research and Engineering Laboratory (U.S.) |
| Personal author | Garcia-Gaines, Ruben A. Frankenstein, Susan |
How do you perform an Atterberg test?
Liquid Limit
- Place a soil paste in the cup.
- Cut a groove at the center of the soil paste with the standard grooving tool.
- Lift the cup and drop it from a height of 10mm, using the crank-operated cam.
- Repeat the procedure at least three times for the same soil at varying moisture contents.
What does an Atterberg limits test measure?
Atterberg limits tests establish the moisture contents at which fine-grained clay and silt soils transition between solid, semi-solid, plastic, and liquid states.
What are the 4 types of soil classification?
OSHA classifies soils into four categories: Solid Rock, Type A, Type B, and Type C. Solid Rock is the most stable, and Type C soil is the least stable.
Where is the USCS used for?
United States Customs Service, a former portion of the U.S. Federal Government dedicated to keeping illegal products outside of U.S. borders.
What is USCS stand for?
USCS. United States Customary System (system of units)
