Launching girder

What should you do before using one launching girder?

FAQ Aug 27, 2015 No Comments

When a bridge will be constructed, one launching girder comes out in my mind natually, which may be professional sense.

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Actually before deciding using one launching girder, below factors have to be considered:

1. a precast yard for pre-cast girders to be pre-fabricated and a lifting station for precast-girders to be lifted onto the girder carrier. If there is no enough space to build a precast yard, then it has be to re-considered whether the launching girder is proper;

2. To lift and carry pre-cast girders, gantry crane and girder carrier are necessary;

3. Whether the bridge abutment has enough space allowing assembly of launching girder;

4. check and re-check loads of launching gantry and girder carrier, ensure whether the bridge deck could bear loads from them.

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