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Bridge Construction: Prevention of Overloading

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Bridge Construction: Prevention of Overloading

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Questions and Answers

What is the main purpose of a foundation in a bridge superstructure?

To facilitate easy maintenance of the bridge

To enhance the aesthetic appeal of the bridge

To provide shade for pedestrians walking under the bridge

To receive the load from piers and abutments and transfer it to the soil (correct)

When selecting a foundation type for small bridges, what is the recommended choice?

Piles for weak soil (correct)

Caissons for rock bed

Spread foundations for deep riverbeds

Piles for strong soil

What is the function of pile foundations in bridge construction?

To increase the overall weight of the bridge

To provide structural support in normal ground conditions

To protect the bridge from water damage

To transfer loads through weak soil to deeper soil or rock strata (correct)

When should spread foundations be used for small bridges?

In areas with rock or soil having good bearing capacity Signup and view all the answers

Why are caissons recommended for deep riverbeds?

To reach deeper soil strata with high bearing capacity Signup and view all the answers

What factors should be considered in foundation design when evaluating geologic and environmental conditions?

Geologic and environmental conditions Signup and view all the answers

In what conditions are pile foundations used in bridge construction?

In areas with weak soil or water to transfer loads deeper Signup and view all the answers

Why are strong foundations necessary in bridge construction?

For stability, settlements, tailored to superstructure Signup and view all the answers

What loadings should foundations be designed to support in a bridge superstructure?

All live and dead loads, and earth and water pressure loadings Signup and view all the answers

Which type of foundation is recommended when the bed below a small bridge has good bearing capacity?

Spread foundations Signup and view all the answers