A modular storm water retention system and method for exemplary uses collecting and temporarily retaining storm water run-off. The system includes a plurality of modular retaining units which are selectively connected together to form an interior chamber volume for collecting storm water run-off directed into the chamber volume. A plurality of modular trays are engaged with the top portions of the respective retention units to prevent relative movement of the retention units and eliminate, or substantially reduce, the need for porous material to be installed in and around the retention units greatly increasing the excavation void space usable for water collection and retention. The trays further support the backfill material and prevent passage of the backfill material into the void space below the trays.

A modular storm water retention system and method for exemplary uses collecting and temporarily retaining storm water run-off. The system includes a plurality of modular retaining units which are selectively connected together to form an interior chamber volume for collecting storm water run-off directed into the chamber volume. A plurality of modular trays are engaged with the top portions of the respective retention units to prevent relative movement of the retention units and eliminate, or substantially reduce, the need for porous material to be installed in and around the retention units greatly increasing the excavation void space usable for water collection and retention. The trays further support the backfill material and prevent passage of the backfill material into the void space below the trays.

A composite wall, ceiling or floor panel (10), system and method, including a sheet (14) having a first face (18) including at least one first mounting portion (16), and at least one formwork member (20) with at least one second mounting portion (30) arranged to engage with the first mounting portion of the sheet to retain the sheet and said at least one formwork member together. Structural support comes from piers (for a wall) or beams (ceiling or floor) formed in the spacing between adjacent formwork members. The formwork members act as the core of a wall, ceiling or floor panel. An external coating (123) is applied to the formwork members, such as spray shotcrete or render. Channels (28) formed by the formwork members defines integrated ducting for services to be run.

The invention comprises a product. The product comprises a first removable concrete form having a concrete forming face and a first insulating panel insert having a first primary surface and an opposite second primary surface, wherein the second primary surface of the first insulating panel insert contacts the concrete forming face of the first removable concrete form. The product also comprises an elongate anchor member having an enlarged portion and an elongate portion, the elongate portion having a first end and an opposite second end, wherein the enlarged portion is disposed adjacent the first end and contacts the second primary surface of the first insulating panel insert and wherein the elongate portion extends through the first insulating panel insert and extends outwardly from the first primary surface of the first insulating panel insert. A method of using a removable insulated concrete form system is also disclosed.

Various embodiments of the present disclosure provides a joint edge assembly and a reusable multiple position height adjuster and method of positioning and installing joint edge assembly and the reusable multiple position height adjuster for forming two adjacent concrete slabs and a joint between such adjacent concrete slabs.

Various embodiments of the present disclosure provides a joint edge assembly and a reusable multiple position height adjuster and method of positioning and installing joint edge assembly and the reusable multiple position height adjuster for forming two adjacent concrete slabs and a joint between such adjacent concrete slabs.

A cement form assembly includes cement and a cement form. The cement form can include a ground facing surface extending horizontally on a ground support surface and a cement facing surface extending vertically and contacting the cement. An extension member extends outward from the cement form and includes a surface that extends the ground facing surface or the cement facing surface. The cement form and the extension member are each made, at least partially, of a foam material.

A cement form assembly includes cement and a cement form. The cement form can include a ground facing surface extending horizontally on a ground support surface and a cement facing surface extending vertically and contacting the cement. An extension member extends outward from the cement form and includes a surface that extends the ground facing surface or the cement facing surface. The cement form and the extension member are each made, at least partially, of a foam material.

The present invention relates to methods of forming voids in concrete elements, and to a void former apparatus and system useful for this application. The void former unit comprises a first void former element comprising a first surface and a first opening in the first surface and a second void former element comprising a second surface and a second opening in the second surface, wherein the first void former element and the second void former element detachably connect to form a passage between the first opening and the second opening, and a void space between the first surface and the second surface surrounding the passage. Multiple void former units can detachably connect to form a void former system comprising a single continuous void space. While exemplified by use in concrete elements, other uses of the void former unit and void former system are envisaged.

Stay-in-place forms and methods and equipment for installing thereof. A concrete form includes a vertical component and a horizontal component, the vertical component located substantially perpendicular to the horizontal component. Also, the form includes an interior surface, at least a portion of the interior surface providing a form for supporting uncured concrete; wherein the uncured concrete forms a concrete structural portion upon curing of the uncured concrete; and wherein the interior surface remains attached to the concrete structural portion after curing. The form may include inserts and compatible form attachments. Also, forms including recesses may be utilized to reduce the weight thereof. Lifting equipment and accessories may be utilized to lift the form from a form holder and set same in place. Forms contain the work area as soon as it is installed to minimize fall hazards and the time, costs, and downtime associated with installation of safety measures.