A method is provided for securing external wall insulation (EWI) panels to the outer walls of a high rise building of large panel construction. The method involves first identifying the location of internal voids in outermost floor/ceiling panels of the building; and then creating continuous passages through the outer load-bearing wall panels of the building into the located internal voids, with each such passage forming a tie bar anchorage hole extending into the adjacent floor/ceiling panel. Down the length of each tie bar anchorage hole is inserted a tie bar that has, at an inner end portion, an anchorage, and at an outer end portion, an externally screw-threaded portion that projects from the outer load-bearing wall panel. A pattress plate is located at the outer end of each anchorage hole, with the externally screw-threaded outer end portion of each tie bar extending through the associated pattress plate.

The invention provides a method of securing external wall insulation (EWI) panels to the outer walls of a high rise building of large panel construction. The method comprises first identifying the location of internal voids (7) in outermost floor/ceiling panels (2) of the building; and then creating continuous passages through the outer load-bearing wall panels (1) of the building into the located internal voids (7), each such passage forming a tie bar anchorage hole extending at least half a metre into the adjacent floor/ceiling panel. Down the length of each tie bar anchorage hole is inserted a tie bar (10) which has at an inner end portion (11) an anchorage (13,14) and which has at an outer end portion (12) an externally screw-threaded portion which projects from the outer load-bearing wall panel. A pattress plate (17) is located at the outer end of each tie bar anchorage hole, with the externally screw-threaded outer end portion of each tie bar extending through an aperture in the associated pattress plate (17). The pattress plates are secured in position in or against the outer load-bearing wall panels (1). A grouting compound (20) is then extruded past each pattress plate (17) or through an eccentric grout injection hole (19) in each pattress plate (17) and into the tie bar anchorage holes around the tie bars (10). Once the grouting compound (20) has set, a metal framework (25,26) for supporting external wall insulation for the building is bolted to the projecting externally screw-threaded end portions (12) of the tie bars (10), and EWI panels are secured to the metal framework (25,26) to clad the building.

The invention provides a method of securing external wall insulation (EWI) panels to the outer walls of a high rise building of large panel construction. The method comprises first identifying the location of internal voids (7) in outermost floor/ceiling panels (2) of the building; and then creating continuous passages through the outer load-bearing wall panels (1) of the building into the located internal voids (7), each such passage forming a tie bar anchorage hole extending at least half a metre into the adjacent floor/ceiling panel. Down the length of each tie bar anchorage hole is inserted a tie bar (10) which has at an inner end portion (11) an anchorage (13,14) and which has at an outer end portion (12) an externally screw-threaded portion which projects from the outer load-bearing wall panel. A pattress plate (17) is located at the outer end of each tie bar anchorage hole, with the externally screw-threaded outer end portion of each tie bar extending through an aperture in the associated pattress plate (17). The pattress plates are secured in position in or against the outer load-bearing wall panels (1). A grouting compound (20) is then extruded past each pattress plate (17) or through an eccentric grout injection hole (19) in each pattress plate (17) and into the tie bar anchorage holes around the tie bars (10). Once the grouting compound (20) has set, a metal framework (25,26) for supporting external wall insulation for the building is bolted to the projecting externally screw-threaded end portions (12) of the tie bars (10), and EWI panels are secured to the metal framework (25,26) to clad the building.

The invention relates to a construction system using multi-layer precast concrete elements, combining vertical elements (FIG. 1) and horizontal elements. The vertical elements are formed by precast panels containing the following layers: outer or facade layer (1), an insulating layer (2), a structural concrete layer (3) and internal finishing layer (6). Horizontal elements include a layer of structural concrete.

The performance of precast concrete cladding wall panel connection details is enhanced by incorporating a specific connection hardware, that allows precast panels to deform elastically to accommodate relative displacements due to building motion and/or energy associated with a seismic event. The connection hardware includes a crushing tube to at least partially absorb an impact due the seismic event.

The performance of precast concrete cladding wall panel connection details is enhanced by incorporating a specific connection hardware, that allows precast panels to deform elastically to accommodate relative displacements due to building motion and/or energy associated with a seismic event. The connection hardware includes a crushing tube to at least partially absorb an impact due the seismic event.

A construction article 12 usable in the construction of a building made of concrete. The article 12 has base and side members 32, 34 in the form of plates extending perpendicularly from each other in an L-shape configuration. Three spaced upstanding elongate members 42 are provided upstanding from the base member 32. An appropriately shaped closure member 14 is provided which closes the open ends of the elongate members 42 such that when concrete is poured thereover the members 42 leave three openings extending through the set concrete to permit fixings to extend therethrough.

A construction article 12 usable in the construction of a building made of concrete. The article 12 has base and side members 32, 34 in the form of plates extending perpendicularly from each other in an L-shape configuration. Three spaced upstanding elongate members 42 are provided upstanding from the base member 32. An appropriately shaped closure member 14 is provided which closes the open ends of the elongate members 42 such that when concrete is poured thereover the members 42 leave three openings extending through the set concrete to permit fixings to extend therethrough.

A building module comprising a bearing wall element having the form of a rectangular parallelepiped with openings intended for installation of window and/or door units and/or hinged elements, heat-insulating, reinforcing and finishing layers, having the same surface area, successively attached onto a bearing wall reinforced concrete element, the said surface area indents from an edge of the bearing wall element along the perimeter, the bearing wall element is made of lightweight reinforced concrete comprising a concrete mixture with lightweight fillers and a spatial frame formed by plane reinforced frames interconnected in a horizontal plane and embedded connectors and transport loops located on an outer edge, with extra reinforcing elements having a form of parallel rods positioned in an upper part of the spatial frame are located between plane frames, and the spatial frame is filled with concrete and is made using lightweight filler.

A building module comprising a bearing wall element having the form of a rectangular parallelepiped with openings intended for installation of window and/or door units and/or hinged elements, heat-insulating, reinforcing and finishing layers, having the same surface area, successively attached onto a bearing wall reinforced concrete element, the said surface area indents from an edge of the bearing wall element along the perimeter, the bearing wall element is made of lightweight reinforced concrete comprising a concrete mixture with lightweight fillers and a spatial frame formed by plane reinforced frames interconnected in a horizontal plane and embedded connectors and transport loops located on an outer edge, with extra reinforcing elements having a form of parallel rods positioned in an upper part of the spatial frame are located between plane frames, and the spatial frame is filled with concrete and is made using lightweight filler.