Abstract: There is disclosed a fixing device for mounting a plate on one side of a flange of a beam, the device comprising a base portion for engagement with an opposite side of the flange, and upstanding portion provided on the base portion, a hole extending through the base and upstanding portions and formed with a screwthread along at least part of its length, and a threaded fastener adapted to be taken through a hole in the plate and into threaded engagement with the hole in the device in order to hold-down the plate onto the flange.

Abstract: A hookbolt adapter for use with a bolt in order to convert the latter into a hookbolt, the adapter comprising a hole through which the shank of the bolt can be taken, a nose portion and a tail portion diametrically opposed to each other with respect to the hole, and a support surface to be engaged by the head or by the nut of the bolt. The hole is of circular cross-section and the axis of the hole is slightly inclined to a line perpendicular to the support surface, and two diametrically opposed substantially semicircular contact portions of the wall of the hole serve to retain the bolt rigid with the adapter when the axis of the bolt adopts a position substantially perpendicular to the support surface.

Abstract: An adapter which converts a bolt into a hookbolt has a nose portion and a tail portion diametrically opposed with respect to the stem of the bolt. The nose portion has an engagement surface which curves upwardly away from a flange to which the bolt is to be hooked, and parallel ribs are provided on the engagement surface which extend outwardly away from the stem of the bolt. The ribs are deformable so as to compensate for irregularities in the surface of the flange.