Abstract: 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.

Abstract: 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.

Abstract: A method of drilling through a masonry structure 20 includes the steps of providing a drill 10 and using the drill 10 to drill a bore 18 in the masonry structure 20. The method also includes a step of providing a reaction member in the form of a lever 28 and causing engagement of the lever 28 with the masonry structure 20 and with the drill 10 within the masonry structure 20 such that the lever 28 may provide a reaction force to assist the movement of the drill 10 through the structure 20 as it drills the bore 18.

Abstract: An apparatus for the directional drilling of a bore hole through a solid substrate includes a main bore head mounted for rotation on a flexible drive shaft and a pilot bore head for weakening a region of substrate in advance of the main bore head, the weakened region being eccentrically located relative to the main bore head. The apparatus further includes structure for enabling the drilling access of the main bore head, during subsequent drilling of the bore hole, to become substantially aligned with the weakened region of substrate.

Abstract: An apparatus for the directional drilling of bore hole through a solid substrate includes a main bore head mounted for rotation on a flexible drive shaft and a pilot bore head for weakening a region of substrate in advance of the main bore head, the weakened region being eccentrically located relative to the main bore head. The apparatus further includes structure for enabling the drilling access of the main bore head, during subsequent drilling of the bore hole, to become substantially aligned with the weakened region of substrate.

Abstract: A method of drilling through a masonry structure 20 includes the steps of providing a drill 10 and using the drill 10 to drill a bore 18 in the masonry structure 20. The method also includes a step of providing a reaction member in the form of a lever 28 and causing engagement of the lever 28 with the masonry structure 20 and with the drill 10 within the masonry structure 20 such that the lever 28 may provide a reaction force to assist the movement of the drill 10 through the structure 20 as it drills the bore 18.

Abstract: An apparatus for the directional drilling of a bore hole through a solid substrate includes a main bore head mounted for rotation on a flexible drive shaft and a pilot bore head for weakening a region of substrate in advance of the main bore head, the weakened region being eccentrically located relative to the main bore head. The apparatus further incudes means for enabling the drilling access of the main bore head, during subsequent drilling of the bore hole, to become substantially aligned with the weakened region of substrate.

Abstract: An apparatus (1) for the directional drilling of a bore hole through a solid substrate includes a main bore head (2) mounted for rotation on a flexible drive shaft (10) and a pilot bore head (4) for weakening a region of substrate in advance of the main bore head, the weakened region being eccentrically located relative to the main bore head. The apparatus further includes means for enabling the drilling access of the main bore head, during subsequent drilling of the bore hole, to become substantially aligned with the weakened region of substrate by using a cam (12).