Hollow concrete body production method - uses adjustable-height frame with tapering-section strips on underside

摘要

The method produces hollow concrete bodies each comprising two concrete slabs held apart by cage-type members, using a pallet with a number of mould troughs. It uses an adjusting cross-member which can be raised and lowered, and which comprises a frame from whose underside a number of parallel adjusting strips protrude at intervals equal to the trough width. The strips widen from their lower free edges towards the frame, so that the distance between adjacent strips near the underside of the frame is less than the mould trough width.