Method for making hollows in concrete or in reinforced concrete blocks

摘要

Method for making hollows in concrete or in reinforced concrete blocks is based thereon, that a lining with cross-section locates on bottom part of a block, produced of pressing from wood-cement mixture, which is oriented down to with open part. Then the block fills up with concrete to the required height. In the beginning and/or in the end starting the lining of purpose of closing hollows may be closely put the closing front profitably produced of pressing from wood-cement mixture. The bottom part of a block can be from compressed concrete, hardened or reinforced concrete.