Civil Engineering (CE) Exam > Civil Engineering (CE) Videos > Soil Mechanics > Earth Pressure at Rest
Earth Pressure at Rest Video Lecture | Soil Mechanics - Civil Engineering (CE)
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FAQs on Earth Pressure at Rest Video Lecture - Soil Mechanics - Civil Engineering (CE)
| 1. What is earth pressure at rest in civil engineering? |  |
Answer: Earth pressure at rest, also known as lateral earth pressure at rest, refers to the pressure exerted by soil on a retaining structure when the soil is in a state of equilibrium and not undergoing any deformation or movement. It is the minimum earth pressure that occurs when the soil is at rest.
| 2. How is earth pressure at rest calculated? | |
Answer: The calculation of earth pressure at rest is based on the concept of Rankine's theory. According to this theory, the earth pressure at rest can be determined using the equation: P = γH, where P is the earth pressure at rest, γ is the unit weight of the soil, and H is the height of the soil column.
| 3. What factors affect earth pressure at rest? | |
Answer: Several factors can influence the earth pressure at rest. These include the unit weight of the soil, the height of the soil column, the soil's friction angle, and the soil's cohesion. Additionally, the presence of groundwater and the type of soil (such as cohesive or granular) can also impact the earth pressure at rest.
| 4. How is earth pressure at rest used in civil engineering? | |
Answer: Earth pressure at rest is a crucial factor in the design of retaining walls, sheet pile walls, and other structures that involve soil mechanics. By understanding the earth pressure at rest, engineers can determine the stability and required strength of these structures, ensuring their safe and efficient design.
| 5. What are the differences between active earth pressure and earth pressure at rest? | |
Answer: Active earth pressure and earth pressure at rest are two different concepts in soil mechanics. Active earth pressure occurs when the soil is in a state of movement or deformation due to external forces. On the other hand, earth pressure at rest occurs when the soil is in equilibrium and not undergoing any deformation. The magnitude of active earth pressure is generally higher than that of earth pressure at rest.
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Dec 22, 2024 Last updated |
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