Ribbed Foundation

The ribbed foundation solution consists of a thin slab, a pedestal/plinth in the center of the foundation and six to twelve arms that strengthen the slab. The saving is estimated up to 40% of the concrete volume.

Concrete savings

The ribbed foundation is a variant to the classic gravity foundation. Important parts of the concrete volume are replaced by backfill.

As promising as the benefits of this interesting design may seem at a first glance: the complicated shatter works stands against the savings in concrete. That is why this solution shows its major advantages particularly when the costs for concrete are much higher than the labor costs. Technically, this solution works also on grounds with poor soil stresses.

Challenges

The modelling of this type of foundation is more time-consuming and needs experience in the design of wind turbines foundations.

Some approaches are done to precast at least a part of the ribbed foundation in order to accelerate construction.