B R I D G E B U I L D E R
 NRS AS: Friday, November 21, 2008 A normal working cycle 

A normal working cycle may be as follows:

  1. The Bridgebuilder, except for the internal formwork, is launched into position for a new segment.
  2. The external formwork is levelled and fixed.
  3. Bottom slab and webs reinforced.
  4. The internal forwork is pulled forward.
  5. Concreting of bottom slab and webs. The top slab may be cast after a short intermission to allow setting of the concrete in the webs, or it may be cast the next day.
  6. After sufficient concrete curing, post-tensioning takes place.
  7. Formwork is loosened, and the Bridgebuilder launched forward to the next segment. In most cases one cycle is carried out in one week. There are examples of 4-5 days cycle.

Main principle & components: