Abstract: A girder includes at least one elongated profiled rod which is provided with at least one bearing surface extending longitudinally of the rod and centered on an imaginary longitudinal plane for supporting at least one associated engagement element during displacement of the latter longitudinally of the profiled rod. The profiled rod further includes two longitudinal webs extending along respective longitudinal central planes which enclose an angle with one another and intersect each other and the imaginary longitudinal plane of the bearing surface substantially in a common longitudinal axis of the profiled rod. The carrier further includes at least one girder body joined to at least one of the longitudinal webs at a transition region and extending along a common plane therewith at least at the transition region. The carrier body is advantageously constituted by a flat wall which includes at least one relatively thin-walled plate and reinforcing elements attached to the plate and reinforcing the same.

Abstract: A traction arrangement for use by a sail surfer or water skier who is pulled along by holding onto a bar-shaped member connected to pulling apparatus, has two pulling elements which are arranged to be worn by a user and each having a leading end, and two connecting elements for detachably connecting the pulling elements to the bar-shaped member. Each of the connecting elements is provided at the leading end of a respective one of the pulling elements and is flexible so as to be deformable about the bar-shaped member by a pressure of the user's hands to thereby engage the bar-shaped member in frictional connection with the latter. In the event of a fall or when the user wishes to disengage the bar-shaped member, cessation of pressure by the user's hands suffices to terminate the frictional connection. The connecting elements may be formed by inner portions of gloves which are connected to the pulling elements.