The Bernold Sheets are used as a complement to the use of trusses as primary support. Onix Underground offers Bernold Sheets for use as lost formwork and reinforcement. This type of sheets can also be used to prevent small detachments within the excavated section.

The stamped and corrugated Bernold sheet has a dimension of 1190×1080×2 mm, and its assembly, taking into account the overlaps between each plate, results in a useful coverage of 1 m2.

The presentation of the plates can be straight or curved, depending on the geometry of the truss on which it will be mounted.