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Questions and Answers
What is the main advantage of erecting steel bridges using a crane?
What is the main advantage of erecting steel bridges using a crane?
- Needs temporary supports for crane operation
- Suitable for bridges far from the ground
- Requires less equipment and labor on site (correct)
- Requires heavy lifting equipment
When might temporary supports (falseworks) be required during the erection of steel bridges using a crane?
When might temporary supports (falseworks) be required during the erection of steel bridges using a crane?
- When there is lack of heavy lifting equipment (correct)
- When there is heavy lifting equipment available
- When the bridge is close to the ground
- When there is good accessibility on the site
What issue can arise during the erection process for a bridge with a longitudinal structural form on flexible piers?
What issue can arise during the erection process for a bridge with a longitudinal structural form on flexible piers?
- Excessive stressing of the piers (correct)
- No impact on the piers during erection
- Reduced bending moments at the pier bases
- Shortening of the beams during erection
Why are the steel beams temporarily fixed to the abutment during the erection process for a bridge constructed by crane?
Why are the steel beams temporarily fixed to the abutment during the erection process for a bridge constructed by crane?
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What factor can cause movements at the pier heads during the erection process of a bridge constructed by crane?
What factor can cause movements at the pier heads during the erection process of a bridge constructed by crane?
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