Geotechnical Engineering
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What is different between Prandtal mixing length and Boundarylayer ?
Vivek Patel
Prandtl mixing line theory is the phenomenon of momentum remaining constant in fluid flow where the boundary layer is a theory of variations of velocity perpendicular to the floor and velocity value change from 0 to infinite. Prandtl mixing theory is used for the study of momentum in fluid flow. BouRead more
Prandtl mixing line theory is the phenomenon of momentum remaining constant in fluid flow where the boundary layer is a theory of variations of velocity perpendicular to the floor and velocity value change from 0 to infinite.
Prandtl mixing theory is used for the study of momentum in fluid flow.
Boundary layer theory is used for the study of velocity distributions in fluid flow.
See lessWhat is the Average Density of Soil?
INDER KUMAR YADAV
Soil density is defined in two different terms. particle density bulk density In terms of particle density the density of soil is 2.65 gram per cubic centimeter. in terms of bulk density, the density of soil is 1.6 gram per cubic centimeter. Image shows below that how the density of soil is measureRead more
Soil density is defined in two different terms.
In terms of particle density the density of soil is 2.65 gram per cubic centimeter.
in terms of bulk density, the density of soil is 1.6 gram per cubic centimeter.
Image shows below that how the density of soil is measured
See lessWhat is the bearing capacity of soil? How can we calculate it?
Vivek Patel
The bearing capacity means the soil can transfer the load safely from the foundation to the soil strata without excessive settlement and without any type of failure. Soil bearing capacity can be identify by some test: Dynamic cone penitration test Static cone penitration test Plate load test CBR tesRead more
The bearing capacity means the soil can transfer the load safely from the foundation to the soil strata without excessive settlement and without any type of failure.
Soil bearing capacity can be identify by some test:
Those all test are conducted at site to identify soil bearing capacity.
Two criteria majorly accounted for foundation failure
- Excessive settlement and relative settlement
- Shear failure of soil (punching failure, local shear failure and general shear failure)
See lessWhat is zero air void line in soil?
Abbas Khan Civil Engineer
The zero Air Void line is obtained when there is no presence of the air in the pores of a soil mass and totally filled with the water and soil mass get saturated. It is determined by the compaction test of a soil. Draw the graph between Dry Density VS water content, calculate the dry density from thRead more
The zero Air Void line is obtained when there is no presence of the air in the pores of a soil mass and totally filled with the water and soil mass get saturated. It is determined by the compaction test of a soil. Draw the graph between Dry Density VS water content, calculate the dry density from the compaction test results, and Zero Air void line is drawn on the graph.
See lessWhat are the method for finding Bearing capacity of soil?
Preet Chovatiya
Soil bearing capacity can be determined by below methods:- Penetration test Centrifuge test Analytical method Plate bearing test Modern testing method Presumptive analysis
Soil bearing capacity can be determined by below methods:-
- Penetration test
- Centrifuge test
- Analytical method
- Plate bearing test
- Modern testing method
- Presumptive analysis
See lessWhat is the meaning of shear strength in soil?
Vivek Patel
Shear strength of soil is resistance against shear come from the footing of structure. Shear strength gives soil bearing capacity of structure footing without excessive settlement. Shear strength of soil is given by coulomb. Shear strength = c +φ tan ∅ Where c= cohesion φ= normal stress ∅ = aRead more
Shear strength of soil is resistance against shear come from the footing of structure.
Shear strength gives soil bearing capacity of structure footing without excessive settlement.
Shear strength of soil is given by coulomb.
Shear strength = c +φ tan ∅
Where c= cohesion
φ= normal stress
∅ = angle of internal friction of soil
In clay angle of internal friction is very less and in sandy soil, cohesion is very less.
Some of the test is use for finding out shear strength of soil like
See lessWhy abutment in bridge is designed as earth pressure and rest condition?
Kuldeep Singh
Earth pressure at rest is used for the design of underground structures, be abutments, etc. because it is expected that there would be no lateral displacement in the soil mass after construction is complete and during the life of the structure. Also, if you test the earth pressure in the field arounRead more
Earth pressure at rest is used for the design of underground structures, be abutments, etc. because it is expected that there would be no lateral displacement in the soil mass after construction is complete and during the life of the structure.
Also, if you test the earth pressure in the field around these structures, it matches very well with the calculated earth pressure at rest for normally consolidated soils.
See lessHow to you know if the soil is organic or inorganic?
Kuldeep Singh
There are a few parameters that you can use to judge whether a soil is organic or inorganic. Organic soils have fairly lower bulk densities than inorganic soils (0.2 to 0.3 as compared to 1.2 to 1.5). Organic soils will feel significantly lighter. Organic soils can retain way more water than inorganRead more
There are a few parameters that you can use to judge whether a soil is organic or inorganic.
Organic soils have fairly lower bulk densities than inorganic soils (0.2 to 0.3 as compared to 1.2 to 1.5). Organic soils will feel significantly lighter.
Organic soils can retain way more water than inorganic soils (in proportions if their own densities).
The color of organic soils is usually darker than inorganic soils. But this is not a good parameter for comparison since the color is affected by other things as well apart from organic nature.
Cation exchange capacity (CEC) is higher in organic soils (4 times as that of inorganic soils). This means that organic soils will have a lower pH, higher exchangeable hydrogen, more calcium and magnesium ions, and higher exchangeable calcium content.
See less