Effective Stress in Soil

# Effective Stress in Soil Video Lecture | Soil Mechanics - Civil Engineering (CE)

## Soil Mechanics

30 videos|76 docs|74 tests

## FAQs on Effective Stress in Soil Video Lecture - Soil Mechanics - Civil Engineering (CE)

 1. What is effective stress in soil?
Ans. Effective stress in soil refers to the intergranular stress that determines the behavior of soil particles. It is the stress transmitted through the solid skeleton of the soil, excluding the pore water pressure. It is a crucial factor in geotechnical engineering as it influences soil strength, consolidation, and settlement.
 2. How is effective stress calculated in civil engineering?
Ans. Effective stress in civil engineering is calculated by subtracting the pore water pressure from the total stress. The total stress is the sum of the weight of the soil particles and any externally applied loads. Pore water pressure is the pressure exerted by the water present in the soil voids. By subtracting the pore water pressure from the total stress, we can determine the effective stress.
 3. What is the significance of effective stress in soil mechanics?
Ans. Effective stress is of great significance in soil mechanics as it determines the shear strength, compressibility, and volume change characteristics of soil. It helps in understanding the behavior of soil under different loading conditions and plays a crucial role in designing foundations, retaining structures, and assessing slope stability.
 4. How does effective stress affect soil consolidation?
Ans. Effective stress plays a key role in soil consolidation. During the consolidation process, excess pore water pressure dissipates, and the soil particles rearrange themselves, leading to settlement. The rate of consolidation and settlement is directly influenced by the effective stress. Higher effective stress results in faster consolidation and reduced settlement, while lower effective stress leads to slower consolidation and increased settlement.
 5. How can effective stress be increased in soil?
Ans. Effective stress in soil can be increased by either increasing the total stress or reducing the pore water pressure. Increasing the total stress can be achieved by adding additional loads or increasing the weight of the soil particles. Reducing the pore water pressure can be done by draining the excess water from the soil or applying a vacuum. Both methods effectively increase the intergranular stress and enhance the soil's strength and stability.

## Soil Mechanics

30 videos|76 docs|74 tests

### Up next

 Explore Courses for Civil Engineering (CE) exam
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

,

;