Abstract: The hot-rolled straight-web steel sheet pile comprises a straight web delimited on each longitudinal side respectively by an interlock strip. The web has a rolled-in taper which is designed in such a way that, in a tensile test of two samples from this sheet pile which are connected by means of their interlock strips, the web is deformed plastically in the region of this taper before a failure of the interlock connection can occur. The rolling of such a sheet pile, which is distinguished in cellular cofferdams by a high plastic deformation capacity, can take place by means of slightly modified standard rolls and consequently requires no major investment.

Abstract: The inventive girder (10) for a support wall curtain comprises a core (12) and two parallel wings (14, 16) which are supported by said core and provided with connection means (20). Said wings (14, 16) are reinforced on the largest part of the width thereof on the side opposite to the core (12) by an excessive material thickness which starts only at a certain distance (d1) from the longitudinal edges of the wing, thereby leaving the thinner wing ends (21) carrying said connection means (20) free. The non-reinforced ends (21) of the wings make it possible to use a conventional connection systems (18) in order to integrate such a girder (10) provided with a high resistant module into the support wall curtains.