METHODS OF BRIDGE CONSTRUCTION
Before a bridge can be built an appropriate method of construction must be chosen. The decision is made by the design team. The principle factors considered by the design team when chosing a suitable method of construction are given below:
- The scale of the bridge
- The obstacles to be crossed
- The regularity of the span lengths
- The horizontal and vertical profiles of the bridge decks
- The nature of the soil strata
- The local weather
- The local cost of materials
- The local labour market
- The accessibility of the site
- The time allowed for construction.
Following are the methods of bridge construction:
1. Cast instu- method of bridge construction
2. Balance cantilever
3. Precast method
4. Span by span casting
5. Incremental launching
6. Cable stayed
7. Arch method
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