criteria for giving foundation depth in the bridges

Question

Accepted Answer

The criteria for giving foundation depth in bridges depend on various factors such as soil conditions, water table level, bridge type, and load requirements.

Soil conditions: The type and strength of the soil at the bridge site play a crucial role in determining the foundation depth. Weak or loose soils may require deeper foundations.
Water table level: If the water table is high, it can affect the stability of the foundation. In such cases, deeper foundations may be necessary to ensure stability.
Bridge type: Different bridge types have different load requirements. The foundation depth should be designed to support the anticipated loads from the bridge and the traffic it will carry.
Load requirements: The expected loads on the bridge, including the weight of the structure itself, traffic loads, and potential future expansions, influence the foundation depth.
Geotechnical investigations: Detailed soil testing and analysis help determine the appropriate foundation depth based on the soil properties and load requirements.
Examples: A bridge built over soft clay soil may require deeper foundations compared to a bridge constructed on rock or stable soil. Similarly, a bridge designed to carry heavy truck traffic may need deeper foundations than a bridge for light vehicles only.

Accepted Answer

Load applied by bridge,

Bearing capacity of soil,

Types of soil.

criteria for giving foundation depth in the bridges

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