8 Questions
What is a key requirement for erection by crane?
Good accessibility around and on the site
What must the designer ensure for the steelwork elements during handling and transportation?
Resistance to local forces
When is temporary support (falsework) required for erection by crane?
When the bridge is less than 15m above ground
What can happen if the steel beams are temporarily fixed to the abutment during the erection process?
The piers will experience bending moments that exceed those when the bridge is in service
Why can the erection of the steel structure by crane result in significant stressing of the piers?
The variation in temperature causes lengthening or shortening of the steel beams
In the final state, how are the beams fixed to the central piers?
They are fixed permanently to ensure stability
Why are the bearings at the abutments made moving bearings in the final state?
To accommodate movement of the steel structure due to temperature changes
How can leaving the bearings between the beams and piers temporarily free to move during erection help avoid stressing the piers?
It allows for lengthening and shortening of the beams due to temperature variation
Test your knowledge on the steel erection process using cranes, including the equipment required, accessibility considerations, and suitability for different bridge heights. Learn about the use of temporary supports to overcome limitations in heavy lifting equipment.
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