A stay-in-place form comprises a plurality of elongated panels connectable to one another in edge-to-edge relationship. The plurality of panels comprises first and second panels connectable to one another in edge-adjacent relationship by a connection which comprises a contact joint. The first panel comprise a longitudinally extending first seal-retaining projection shaped to project outwardly from the outer surface of the first panel at a location spaced apart from a first outer-surface transverse edge of the first panel in a first transverse direction. The second panel comprising a longitudinally extending second seal-retaining projection shaped to project outwardly from the outer surface of the second panel at a location spaced apart from a second outer-surface transverse edge of the second panel in a second transverse direction opposite the first transverse direction. The first and second seal-retaining projections and the outer surfaces of the first and second panels defining at least a portion of a seal-receiving concavity which opens outwardly from the form when the connection is made.

Disclosed is an economical and effective way of producing a modular retaining wall for a material to be retained, using backer blocks and facing blocks which are stacked into continuous front and back wall components connected by separate connectors in a back to back, spaced apart arrangement, thereby forming a hollow retaining wall. The hollow wall is filled with loose filler material to increase the mass and retaining capacity of the wall. None of the wall components is embedded in the material to be retained. The facing blocks, connectors and filler material are all separated from the material to be retained by the backer blocks. Further disclosed are wall components and a wall kit for a modular retaining wall. A double sided decorative wall is also disclosed. The modular wall system allows for the construction both straight and curved retaining walls.

A buck panel adapted to be interconnected with other panels to form a buck to frame a bulkhead or an opening in an insulated concrete form wall for receiving a window or door. The buck panel has a foam portion, a central support beam, a first lateral support beam, and a second lateral support beam. The central support beam is positioned longitudinally within a center portion of the foam portion. A plurality of wings extend from the central support beam in such a way that the wings protrude from an internal surface of the foam portion so as to be received in concrete poured over the internal surface. The first and second lateral support beams are positioned longitudinally within a first side and a second side of the foam portion, respectively.

Insulated hollow core concrete forming system provide a forming system which can integrate the advantages of the hollow core design into the Insulated concrete form (ICF) system. The Insulated hollow core form system includes one or more of a Modular formwork unit, composed and formed of insulative material, where the Modular formwork unit utilizes longitudinal void formers that crafts a forming cavity of a hollow core section in between two spaced parallel side panels. The forming cavity is disposed to receive concrete or other hardening materials to form an insulated hollow core wall or an insulated hollow core slab. The system also includes a furring strip assembly positioned between adjacent Modular formwork units to join them together.

Disclosed is a method for preparing a concrete-filled steel tubular edge-constrained laminated shear wall, belonging to the field of prefabricated buildings. The method allows for integrated hoisting during installation, leading to a simple working procedure and easy quality control. During manufacturing, an interior wythe board is flipped and placed on supporting members on rectangular steel tubes, no cavity formwork or bracket is needed in a cavity, and thus an operation of pulling out the cavity formwork is avoided, and high production efficiency is achieved. The rectangular steel tubes can be welded to horizontal steel bars of interior and exterior wythe boards, avoiding the cumbersome working procedure and high cost caused by stud connection while achieving reliable connection and direct force transmission.

The disclosure presents a composite conduit formwork structure which includes a cylindrical outer casing adapted to bond with a cylindrical inner casing which are maintained at a fixed distance apart by a plurality of radial stanchions. The inner casing and outer casing form an interior void which is filled with concrete during manufacture. The outer casing and inner casing remain in place to protect the structure once completed. A novel method of assembly is also provided whereby radial stanchions are rotated between the outer casing and inner casing. All of the components in a preferred embodiment are formed of a fiberglass material.

A concrete wall has a back surface supported by a back panel while a decorative material is applied to an opposing front surface of the wall by hand or by pneumatic projection while the surface is still plastic, and without using bonding agents. The decorative material may be further exposed by a surface treatment before or after the front surface is floated and finished, with a sealant optionally applied thereafter. The front surface may be created by pneumatic methods or by pouring concrete into forms and removing the front panel to expose the front surface while it is still plastic but hydrated enough not to slump.

A modular wall is a permanent external frame solution for a building. It includes outer panels and inner panels each made of high impact thermoplastic polymer, eliminates the need for removable formwork, reduces construction time and improves insulation and waterproofing. The panels join together in a locking connection by snapping or sliding an end of a first panel to an opposite end of an adjacent second panel. Reinforcing metal pipes connecting each outer panel to a corresponding inner panel occupy a negligible amount of space where the concrete is to be poured so as not to obstruct rebar. Quality control is enhanced since the panels may be transparent to monitor the concrete casting. Each of the outer panels and inner panels may include two substantially parallel walls separated by a pattern of reinforcing ribs that together with the substantially parallel walls define spaces for heat insulation and increase structural integrity.

Insulated hollow core concrete forming system provide a forming system which can integrate the advantages of the hollow core design into the Insulated concrete form (ICF) system. The Insulated hollow core form system includes one or more of a Modular formwork unit, composed and formed of insulative material, where the Modular formwork unit utilizes longitudinal void formers that crafts a forming cavity of a hollow core section in between two spaced parallel side panels. The forming cavity is disposed to receive concrete or other hardening materials to form an insulated hollow core wall or an insulated hollow core slab. The system also includes a furring strip assembly positioned between adjacent Modular formwork units to join them together.

In a one aspect there is disclosed a formwork wall panel (10) having an operative inner surface (12) to face towards an inner space to be filed with building material and an opposing operative outer surface (14) having a surface finishing component (16) secured thereto. The operative inner surface (12) of the formwork wall panel (10) includes a brace coupling formation (18) operatively adapted to engage a wall panel coupling formation (20) of a brace (22) operatively extending between the formwork wall panel (10) and an opposing second formwork wall panel.