Project
Production site for bridge caissons, piers and girder assembly
Two main sites, almost identical in size, for the construction of the caissons and the piers that carry the bridge will be required. Each will need a workforce of more than 500 people.
The construction of the caissons and pier shafts will take the form of large scale concrete casting.
Skills involved will be engineering management, formwork, reinforcement, welding, casting, quality assurance, crane operation and surveying.
Girder assembly will involve the connection of bridge girder segments by welding and the casting of concrete either at joints between girder segments or on the completed girder.
Skills involved will be engineering management, welding, formwork, casting, reinforcement, painting, quality assurance, crane operation and surveying.
The anticipated requirements for one approach bridge production site with delivery of aggregates from the sea and assembly of bridge girders are as follows:
- Water: The estimated average amount of water used for concrete production and used by personnel on site is 100 – 150 m3/day. The peak water consumption is estimated to 20 – 25 m3/hour.
- Sewage: There will be an average of 80 – 125 m3/day of sewage water.
- Electricity: Most of the electrical power will be needed for welding and the concrete batching plant. The total estimated consumption is 500 kVA.
- Traffic of trucks: The number of trucks coming to the site on a daily basis is 10 – 20 trucks/day. It is assumed that materials for the concrete (sand, gravel and cement) are delivered by sea.
- Noise: It is assumed that the requirements regarding noise for heavy industry are complied with.
- Dust: It is assumed that the contractors will take due precautions that dust does not cause problems for the environment (e.g. by watering and cleaning of the site).
