ATBECHDEFRGBITLILUNLSE0115769EUROPEAN PATENT APPLICATIONA319860430EP84100046198401036762219830105IL1986043019861819840815198433 6E 04C 03/29 A 6E 04C 03:34 BenPeripherally stressed composite structural unitsfrUnités de construction sandwich précontraintes périphériquementdeUmfangsvorgespannte VerbundbauelementeTuval, MironWexler, AndreTuval, MironATBECHDEFRGBITLILUNLSE19860430198618

Prestressed composite structural elements, such as columns and beams comprise an open hollow member which is defined by enclosing walls which walls have internal and external side means, a first shear stress being applied to the said external side means and a filler material in said elements having an opposing shear pre-stress.