Abstract: An energy dissipating device which is capable of dissipating energy through its plastic axial deformation without undergoing buckling comprises at least three hysteretic elements, being interconnected in series in such a way, that at least one hysteretic element will be subjected to compression while at least another hysteretic element is subjected to tension when an external load is applied to the energy dissipating device.

Abstract: An energy dissipating device which is capable of dissipating energy through its plastic axial deformation without undergoing buckling comprises at least three hysteretic elements, being interconnected in series in such a way, that at least one hysteretic element will be subjected to compression while at least another hysteretic element is subjected to tension when an external load is applied to the energy dissipating device.

Abstract: A multidirectional antiseismic device dissipates mechanical energy and limits loads; it can be used to connect structural sub-systems or insulate at the base entire structures, especially in cases involving significant relative displacements between connected structural sub-systems. The multidirectional dissipating device is essentially constituted by pluralities of metallic elements, especially shaped and arranged in specific configurations. Two of these are "radial" configurations whereas a third type is "annular". In each case, the configurations extend between an abutment and anchoring top construction and an abutment and anchoring bottom construction.

Abstract: A load dissipating and limiting device for application in anti-seismic works comprises at least an elongated primary member to be connected with its two end portions to two elements of a work subjected to a related displacement, the elongated primary member being adapted to be elastically-plastically deformed, a secondary member being moreover provided to be interposed between one of the two elements of the work and the primary member, the secondary member being adapted to absorb displacements having a value less than a preset value, of one of the two elements with respect to the other, without generating any plastic effects in the primary member.

Abstract: A method and apparatus is disclosed for the removal of layers of concrete, particularly from roadways and motorways. This apparatus includes one or more nozzles located at one end of respective hollow shafts each of which is supported by an articulated joint which is mounted on a movable support. The nozzles are supplied with water by means of a high pressure pump upstream of which there is positioned a preliminary treatment system for treating the water itself. The nozzles are mounted on a movable slide or frame which is controlled by an electronic circuit operable to maintain them at a predetermined height with respect to the surface to be treated. Apparatus is also provided for the elimination of possible hindrances to the free downflow of the water jets against the surface to be treated.

Abstract: Apparatus for the removal of layers of concrete, particularly from roadways and motorways. This apparatus includes nozzles positioned at one end of respective hollow shafts supported by a ball joint and mounted on movable supports. The said nozzles are supplied with water by means of a high pressure pump upstream of which there are positioned preliminary treatment systems for treating the water itself. The nozzles, moreover, are mounted on a slide controlled by electronic apparatus operable to maintain them at a predetermined height with respect to the surface to be scarified. Means are also provided for the elimination of possible hindrances to the free downflow of the water jets against the surface to be scarified.