Abstract: An apparatus for a stay-in-place form assembly comprises a plurality of elongated panels connectable to one another in edge-to-edge relationship. The plurality of panels comprise first and second panels connectable to one another at a connection between a generally male connector component of the first panel and a generally female connector component of the second panel. The generally female connector component comprises a female engagement portion which defines a principal receptacle and the generally male connector component comprises a male engagement portion which is received in the principal receptacle to form the connection. The generally female connector component comprises a first abutment portion and the generally male connector component comprises a second abutment portion which abuts against the first abutment portion to form the connection. The first and second abutment portions are located outside of the principal receptacle.

Abstract: Methods and apparatus are provided for repairing existing structures. A portion of the existing structure is covered with the repair structure. One or more standoffs are coupled to the existing structure to project outwardly away from a surface of the existing structure. One or more cladding panels are coupled to the standoffs by forcing the one or more panels in a direction normal to the surface of the existing structure and into engagement with a standoff connector component of the standoff at a location spaced apart from the existing structure. Curable construction material and/or insulation may be introduced into the space between the cladding panels and the existing structure to provide a repair structure.

Abstract: A stay-in-place form for casting concrete structures comprises a plurality of elongate panels interconnectable in edge-to-edge relationship via complementary connector components on their longitudinal edges to define at least a portion of a perimeter of the form. Each panel comprises a first contoured connector component comprising a protrusion on a first longitudinal edge thereof and a second contoured connector component comprising a receptacle on a second longitudinal edge thereof. The panels are connectable to one another in edge-to-edge relationship by positioning the protrusion of a first panel in or near the receptacle of a second panel and effecting relative pivotal motion between the first connector component of the first panel and the second connector component of the second panel to extend the protrusion of the first panel into the receptacle of the second panel.

Abstract: Fastener-receiving components are disclosed for use in a structure fabricated from a curable material (e.g. concrete, other cementitious materials or other curable materials). The fastener-receiving component comprises: one or more fastener-receiving channels, each fastener-receiving channel defined by a pair of longitudinally and inwardly extending sidewalls and comprising one or more break-through elements which extend longitudinally and transversely between the sidewalls for receiving fasteners that penetrate therethrough; and one or more anchor features that define one or more corresponding concavities shaped to receive liquid material when the structure is formed and to prevent outward movement of the fastener-receiving component when the liquid material cures. Kits and methods are provided for using the fastener-receiving components.

Abstract: A stay-in-place buck for defining an opening in a cast concrete structure has a plurality of frame members arrangeable in an abutting relationship. Each of the frame members has a panel extending transversely between outer opposed panels of a stay-in-place form-work. Flanges extend from opposed edges of the frame member panel for abutment against outer surfaces of the outer opposed panels. Each flange has opposed mitered end edges for abutment against adjacent mitered end edges of flanges of adjacent frame members. The buck also includes fastener-receivers connectable to the panels of the frame members to form one or more fastener-receiving frames extending at least partially about a perimeter of the buck. Each fastener-receiver has mitered edge portions for abutment against adjacent mitered edge portions of adjacent fastener-receivers.

Abstract: Systems and methods are provided for constructing a lined reinforcement structure that covers a portion of an interior wall of a bore. A plurality of axial lining segments; and a bracing station axially moveable along the bore are provided. The bracing station comprises formwork component(s) coupled to brace mechanism(s) for bracing the formwork components against inwardly directed forces the brace mechanism(s) moveable between extended configurations wherein the formwork component(s) are closer to the interior bore wall and retracted configurations wherein the formwork components are further from the interior bore wall.

Abstract: A stay-in-place form-work for casting a concrete structure comprises a plurality of elongate panels interconnectable in edge-to-edge relationship via complementary connector components on their longitudinal edges to define at least a portion of a perimeter of the form-work. The panels include a first panel having a first connector component incorporating a receptacle, and a second panel having a second connector component incorporating a protrusion. The first and second panels are connectable to one another in edge-to-edge relationship by: effecting a loose-fit connection by extending the protrusion of the second connector component into the receptacle of the first connector component; loosely seating a clip onto the first and second connector components; and pushing the clip against the first and second connector components to reach a locked configuration wherein restorative deformation forces associated with the clip act to retain the first and second connector components in the locked configuration.

Abstract: Methods are provided for repairing an existing structure to cover at least a portion of the existing structure with a repair structure. Such methods comprise mounting one or more standoff retainers to the existing structure; coupling one or more standoffs to the standoff retainers such that the standoffs extend away from the existing structure; coupling one or more cladding panels to the standoffs such that the panels are spaced apart from the structure to provide a space therebetween; and introducing a curable material to the space between the panels and the existing structure, the panels acting as at least a portion of a formwork for containing the curable material until the curable material cures to provide a repair structure cladded, at least in part, by the panels. Corresponding apparatus for effecting such methods are also provided.

Abstract: Methods are provided for repairing an existing structure to cover at least a portion of the existing structure with a repair structure. Such methods comprise mounting one or more standoff retainers to the existing structure; coupling one or more standoffs to the standoff retainers such that the standoffs extend away from the existing structure; coupling one or more cladding panels to the standoffs such that the panels are spaced apart from the structure to provide a space therebetween; and introducing a curable material to the space between the panels and the existing structure, the panels acting as at least a portion of a formwork for containing the curable material until the curable material cures to provide a repair structure cladded, at least in part, by the panels. Corresponding apparatus for effecting such methods are also provided.

Abstract: A stay-in-place buck for defining an opening in a cast concrete structure has a plurality of frame members arrangeable in an abutting relationship. Each of the frame members has a panel extending transversely between outer opposed panels of a stay-in-place form-work. Flanges extend from opposed edges of the frame member panel for abutment against outer surfaces of the outer opposed panels. Each flange has opposed mitered end edges for abutment against adjacent mitered end edges of flanges of adjacent frame members. The buck also includes fastener-receivers connectable to the panels of the frame members to form one or more fastener-receiving frames extending at least partially about a perimeter of the buck. Each fastener-receiver has mitered edge portions for abutment against adjacent mitered edge portions of adjacent fastener-receivers.

Abstract: A stay-in-place form for casting concrete structures comprises a plurality of elongate panels interconnectable in edge-to-edge relationship via complementary connector components on their longitudinal edges to define at least a portion of a perimeter of the form. Each panel comprises a first contoured connector component comprising a protrusion on a first longitudinal edge thereof and a second contoured connector component comprising a receptacle on a second longitudinal edge thereof. The panels are connectable to one another in edge-to-edge relationship by positioning the protrusion of a first panel in or near the receptacle of a second panel and effecting relative pivotal motion between the first connector component of the first panel and the second connector component of the second panel to extend the protrusion of the first panel into the receptacle of the second panel.

Abstract: Fastener-receiving components are disclosed for use in a structure fabricated from a curable material (e.g. concrete, other cementitious materials or other curable materials). The fastener-receiving component comprises: one or more fastener-receiving channels, each fastener-receiving channel defined by a pair of longitudinally and inwardly extending sidewalls and comprising one or more break-through elements which extend longitudinally and transversely between the sidewalls for receiving fasteners that penetrate therethrough; and one or more anchor features that define one or more corresponding concavities shaped to receive liquid material when the structure is formed and to prevent outward movement of the fastener-receiving component when the liquid material cures. Kits and methods are provided for using the fastener-receiving components.