K.P. STEPANENKO'S TRAY FOR FORMATION OF BLOCKS, FOR INSTALCE, MADE OF POROUS CONCRETE

摘要

The tray for formation of blocks, for instance, made of porous concrete, includes tray made of plastic flexible material, for instance, of rubber. The tray is equipped with inner metal inserts made of sheet roll material, this at the outer surface and shape follows the inner shape of the rubber tray, and the height of the inserts is arranged as being different, at that the height of the lowest insert is equal to the inner cavity of the tray.