METHOD AND APPARATUS FOR PRODUCING CONCRETE CONSTRUCTION ELEMENTS AND CONCRETE CONSTRUCTION ELEMENTS PRODUCED BY THE SAID METHOD AND/OR BY USING THE SAID APPARATUS

摘要

1500155 Permanent shuttering blocks for concrete floors BALLAST NEDAM GROEP NV 22 Aug 1975 [23 Aug 1974] 34978/75 Heading E1W Hollow shuttering blocks 5 for concrete floors, &c. are open at the bottom and closed at the top by a snap-in closure member 12 which fits in to an inspection hole. This hole allows the concrete immediately under the block to be checked and levelled or added to if necessary. The blocks may sit on spacers 15 fixed thereto which also support lower reinforcement 10, or on spacers (23), Fig. 5 (not shown), which do not support the reinforcement.