A cap for a tubular sleeve having a cylindrical wall extending along a longitudinal axis for forming a passage through a concrete structure. The sleeve has radially extending ridges separated into segments with a channel parallel to the longitudinal axis. The channel has a circumferential width W. The ridges spaced apart a distance Z along the longitudinal axis. The sleeve having an inner diameter D. The cap has a cap element and a positioning tab. The cap element has a circular outer periphery with a flat top surface and a flange having a bottom end, and the tab extends inwardly from the bottom end and has a bottom surface that is orthogonal to the longitudinal axis. The tab has an inner surface that is inclined at an acute angle to the bottom surface. The tab has a width smaller than W and an axial length smaller than Z.

The present invention relates to a concrete channel assembly configured to prevent ingress of concrete into the concrete insert channel during construction. The concrete insert channel assembly includes a concrete insert channel having a plurality of anchor hooks, a plurality of base openings, first and second open ends, and a bottom opening, a plurality of sealing caps having a sealing cap body and a sealing support rib with the sealing support rib integrally connected to the sealing cap body, first and second end caps configured to removably mount and seal the first and second open ends, respectively, and a closure strip configured to slidably mount and seal the bottom opening. Each of the plurality of seal caps is configured to removably mount and seal each of the plurality of base openings of the concrete insert channel.

A process and form for casting a concrete light pole base having a decorative upper portion with a configuration for mounting a light pole. The form includes a base having an opening in which a resilient insert is positioned. The insert has openings for holding threaded ends of mounting bolts and for positioning wiring conduits. Ends of the bolts extend from the insert into the mold cavity. Different inserts may be used to accommodate different light pole mounting specifications. A first form section for shaping a decorative upper portion of the light pole base is positioned on the base, and forms for shaping the cylindrical lower end of the light pole base are secured above the first form section.

An assembly creates annular voids in concrete around the distal end of cylindrical tubes. A cap has a flat top and a cylindrical, depending skirt. An annular, foam plug extends between the inside of the skirt and the outer diameter of the tube. The plug has an undeformed inner diameter smaller than an outer diameter of the tube to create an interference fit around the tube and keep concrete out when the cap is on the end of the tube. The plug has a radial thickness of 0.3 to 1 inch, and has an axial length of 1 to 3 inches, with a bottom of the plug located at a bottom of the skirt. The cap is glued to the end of the tube for pressure testing. After the tube is entrained in concrete, the cap and plug are removed to leave a void in the concrete surface.

A core form device including a circular plate and a plurality of bendable arms extending from the circular plate which when bent about the circular plate form the core form device.

A device for forming a void in cured concrete, the device including a circular base with at least one hole through the base, an elongate rod coupled to the base, and a sleeve with a longitudinal axial bore extending from a first end of the sleeve to and through a second end of the sleeve, the axial bore sized and shaped to receive the elongate rod in slidable engagement within the axial bore and a length of the sleeve being greater than or equal to a length of the elongate rod. The base is coupled to concrete formwork and concrete is poured over the sleeve and the elongate rod and allowed to cure. The rod is removed from the sleeve and the sleeve is removed from the cured concrete to form the void in the cured concrete.

An apparatus, such as a beam pocket, connects a beam to a wall, such as a concrete wall. The apparatus includes a frame having a plurality of panels that cooperate to define a pocket of various heights. The apparatus includes a clamp within the pocket. The clamp is configured to secure an end of the beam at a position within the pocket. The clamp is further configured to selectively define the position relative to the frame. The apparatus further includes at least one anchor extending from the clamp and away from the pocket for mounting with the wall.

This disclosure describes devices and methods for forming voids in or adjacent concrete structures. In some embodiments, a device may include a structure. The structure may be substantially planar. The structure may include a plurality of channels extending therefrom. In some embodiments, the channels are closed at a first end distal from the structure. In some embodiments, the channels are open at a second end proximal to the structure. In some embodiments, the device may be formed from a molded pulp. The molded pulp may be configured to inhibit penetration of water. In some embodiments, the device may be configured to substantially support poured concrete during at least a portion of a curing process of the poured concrete.

The present disclosure is generally directed to processes and apparatuses for use in forming one or more flow channels within a prefabricated manhole assembly. More specifically, an exemplary apparatus embodying various aspects of the disclosure may contain a rigid channel form with a closed top portion, a curved bottom portion, a first end, and a second end. The apparatus may also contain a bung(s) removably positioned into an exterior hole through a sidewall of the prefabricated manhole that may receive one end of the channel form, the bung(s) interior end may further have an open-ended U-shaped slot. A sliding wedge may be used to engaged/disengage the flow channel form.

An assembly creates annular voids in concrete around the distal end of cylindrical tubes. A cap has a flat top and a cylindrical, depending skirt. An annular, foam plug extends between the inside of the skirt and the outer diameter of the tube. The plug has an undeformed inner diameter smaller than an outer diameter of the tube to create an interference fit around the tube and keep concrete out when the cap is on the end of the tube. The plug has a radial thickness of 0.3 to 1 inch, and has an axial length of 1 to 3 inches, with a bottom of the plug located at a bottom of the skirt. The cap is glued to the end of the tube for pressure testing. After the tube is entrained in concrete, the cap and plug are removed to leave a void in the concrete surface.