A floor dowel sleeve is provided that includes a rectangular-shaped body portion having a cavity that is configured to receive a dowel plate that spans across a seam between concrete slabs. A pair of break-away interior walls extend within the cavity from the opening to the end wall of the sleeve. The interior walls extend between two opposing (horizontal) walls of the exterior side walls and are continuously spaced from the other two opposing (vertical) walls of the exterior side walls. The body portion is configured to receive the dowel plate in the cavity between the break-away interior walls, where the break-away interior walls are configured to at least partially break-away from the exterior side walls upon lateral horizontal movement of the dowel plate within the cavity.

A floor dowel sleeve is provided that includes a rectangular-shaped body portion having a cavity that is configured to receive a dowel plate that spans across a seam between concrete slabs. A pair of break-away interior walls extend within the cavity from the opening to the end wall of the sleeve. The interior walls extend between two opposing (horizontal) walls of the exterior side walls and are continuously spaced from the other two opposing (vertical) walls of the exterior side walls. The body portion is configured to receive the dowel plate in the cavity between the break-away interior walls, where the break-away interior walls are configured to at least partially break-away from the exterior side walls upon lateral horizontal movement of the dowel plate within the cavity.

Presented herein is a connector forming a joint between first and second surfaces. The connector includes a hollow male member embedded in a first surface. The male member has open ended protrusion extending therefrom. A hollow female member to be embedded in second surface. The female member has a mating opening for receiving the protrusion and a flexible sealing means for forming a fluid tight seal between the female and male members. When installed, a tendon forms part of the first surface and extends through protrusion into female member. Prior to grouting, movement of the tendon during settling of first surface is facilitated by the male and female member, without breaking the fluid tight seal formed by flexible sealing means. Also presented is a method of forming a joint between a vertical surface and a horizontal surface.

A method for installing an anchor having: making a hole into the material in which the anchor is to be installed, by using a hammer drill; after associating an anchor driver with the chuck of the hammer drill, using the so created anchor driver-hammer drill first assembly, with the hammer drill in hammer mode, to hammer the anchor into the hole; and, after switching the hammer drill to drill mode, tightening the nut or bolt of the anchor using the anchor driver-hammer drill first assembly, or a second assembly comprising the hammer drill and a socket.

A floor dowel sleeve is provided that includes a rectangular-shaped body portion having a cavity that is configured to receive a dowel plate that spans across a seam between concrete slabs. A pair of break-away interior walls extend within the cavity from the opening to the end wall of the sleeve. The interior walls extend between two opposing (horizontal) walls of the exterior side walls and are continuously spaced from the other two opposing (vertical) walls of the exterior side walls. The body portion is configured to receive the dowel plate in the cavity between the break-away interior walls, where the break-away interior walls are configured to at least partially break-away from the exterior side walls upon lateral horizontal movement of the dowel plate within the cavity.

A concrete anchor assembly includes a housing including a lower opening and a side wall; a flange portion extending from the housing; a ramp surface extending upwardly around the lower opening; a split body disposed over the lower opening, the split body including a bottom surface engaging the ramp surface, the split body including a threaded opening. The housing includes a gap between the split body and the side wall. A compressed spring forces the split body toward a bottom of the ramp surface.

A corbel for a wall including a corbel sleeve having a longitudinal passage for extending into the wall. At least one upright or vertically oriented elongate reinforcement member can be secured to the corbel sleeve and extend upwardly and downwardly therefrom for structurally engaging internal portions within the wall for structurally supporting the corbel sleeve. A corbel extension can have an insertion end and a support end. The insertion end can be inserted into the longitudinal passage of the corbel sleeve and secured therein. The support end can extend from the corbel sleeve and the wall, for example laterally, for supporting a load applied thereon.

Connector (10) forming a joint between first (20) and second (22) surfaces. Connector (10) comprises: (i) hollow male member (18) to be embedded in first surface (20), the male member (18) having open ended protrusion (102) extending therefrom; (ii) a hollow female member (12) to be embedded in second surface (22), female member (12) having mating opening (42a) for receiving protrusion (102); and (iii) flexible sealing means (16) for forming a fluid tight seal between the female (12) and male (18) members. When installed, tendon (34) forming part of the first surface (20) extends through protrusion (102) into female member (12). Prior to grouting, movement of tendon (34) during settling of first surface (20) is facilitated by the male and female member (12, 18) without breaking the fluid tight seal formed by flexible sealing means (16). Also claimed is forming a joint between a vertical surface and a horizontal surface.

A connector includes a embed plate having a hollow rectangular tube to be cast with a structure. An support member has a post extending with a pin extending radially through the post at a distal end. The pin is shorter than the longer rectangular dimension and longer than the shorter rectangular dimension. When the support member is positioned adjacent the embed plate and oriented with a longitudinal axis of the pin parallel to the longer rectangular dimension, the post can be inserted into the hollow tube and rotated to a position where the pin abuts a distal end of the hollow tube to lock the support member to the embed plate.

A structure, which enhances the embedding and fixing strength between the concrete and the extending component embedded inside the concrete, includes: the external surface of the shaft part having an integrally formed protruding structure; the center of the shaft part having a central channel; the top end of the central channel communicating with the hole of the tip end, on both sides of the central channel; a plurality of transverse holes communicating with the central channel and configured from top to bottom; and the transverse holes distributed between one protruding structure and another.