Screw or glue the base section with the subsurface. We recommend bolting down.
Screwing:
Align the base section on the subsurface considering an extension joint. Drill the holes for the anchors through the screw
holes of the base section by means of a 5 mm drill. The anchors can be placed into the floor directly through the drill holes of the bottom section.
Gluing:
Use a two-package system or glue with especially high adhesiveness, e.g. Kleiberit. Have the glue completely cured before fixing the top section.