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Questions and Answers
What is a key requirement for erection by crane?
What is a key requirement for erection by crane?
- Large number of equipment on site
- Good accessibility around and on the site (correct)
- Suitability for high-rise buildings
- High level of labor required
What must the designer ensure for the steelwork elements during handling and transportation?
What must the designer ensure for the steelwork elements during handling and transportation?
- Resistance to wind forces only
- Resistance to seismic forces only
- Resistance to global forces
- Resistance to local forces (correct)
When is temporary support (falsework) required for erection by crane?
When is temporary support (falsework) required for erection by crane?
- When there is good accessibility on the site
- When the bridge is less than 15m above ground (correct)
- In case of heavy lifting equipment availability
- When the steelwork elements are lightweight
What can happen if the steel beams are temporarily fixed to the abutment during the erection process?
What can happen if the steel beams are temporarily fixed to the abutment during the erection process?
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Why can the erection of the steel structure by crane result in significant stressing of the piers?
Why can the erection of the steel structure by crane result in significant stressing of the piers?
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In the final state, how are the beams fixed to the central piers?
In the final state, how are the beams fixed to the central piers?
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Why are the bearings at the abutments made moving bearings in the final state?
Why are the bearings at the abutments made moving bearings in the final state?
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How can leaving the bearings between the beams and piers temporarily free to move during erection help avoid stressing the piers?
How can leaving the bearings between the beams and piers temporarily free to move during erection help avoid stressing the piers?
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