Abstract: A connector for connecting formwork panels in a formwork assembly comprises a first elongate portion having triangular cross-section, a second elongate in sliding contact with the first elongate portion, and a third elongate portion in sliding contact with the first elongate portion. A guiding device is coupling the first elongate portion, the second elongate portion, and the third elongate portion. An actuator drives movement of the second elongate portion and third movement along the guiding device. The second elongate portion and the third elongate portion are movable toward and away from each. The second and third elongate portions also each being movable relative to the first elongate portion.

Abstract: The present invention is directed to a pre-cast panel form insert used in precast construction. The insert comprises a substantially planar portion defining dimensions suitable to complement dimensions of a pre-cast panel form and a fluid diverting portion. The fluid diverting portion is configured to define a fluid-diverting recess in an edge face of a pre-cast panel bounded by a form including the form insert. The fluid diverting portion is configured such that said fluid diverting recess defines, a circular cross-sectional profile, or a multi-angular cross-sectional profile, that impedes the flow of water along said pre-cast panel edge face when said edge face assumes a substantially horizontal orientation.

Abstract: This invention relates to a form assembly for pouring a concrete beam, which form assembly comprises at least a basic element (1) with a bottom (3) and two side walls (4, 5) standing thereupon and extending in the longitudinal direction thereof, whereby the upper edges of the side walls (4, 5) of the basic element (1) are connected to each other by means of connecting means, for example, an upper wall (6) with openings (7). On one or both extremities of said basic element (1), an end piece (2) or a connecting piece can be slid and fixed thereupon.

Abstract: A former for supporting a layer of settable plastics material while it sets into hollow reinforcing ribs bonded to a laid up article of fibre reinforced plastics material during manufacture of said article, comprising a foraminous sheet (5) wherein the region of the sheet between each pair of neighbouring holes (6) is elevated above the plane in which the rims of the holes are disposed by means of one or more upstanding formations (7) joined to one another by a flexible web (10). The upstanding formations have rigidifying patterns (11) formed thereon. An article produced using the former is also disclosed.

Abstract: A spacer core for use in constructing hollow concrete walls by introducing the core between and spaced from a pair of vertical mold plates before casting the wet concrete, and subsequently removing the spacer core, the lower end of the spacer core including a water permeable wall and a bottom chamber for accumulating water permeating the wall. Also described is a method of constructing hollow concrete walls by the use of the above spacer core by: introducing the spacer core between and spaced from a pair of vertical mold plates; casting wet concrete into the spaces between the spacer core and the mold plates, whereby the water from the concrete permeates through the bottom of the spacer core into the bottom chamber; after a first time interval, lifting the spacer core a first predetermined distance to draw water from the concrete into the bottom chamber; and subsequently removing the spacer core from the concrete.

Abstract: An apparatus and method for producing a plurality of substantially dimensionally identical concrete structural modules. The apparatus facilitates the manufacture of a plurality of low cost molds of high dimensional accuracy which will consequently produce modules of high accuracy which can be interchanged, turned, and either horizontally or vertically assembled. A master pattern of the module having non-porous interior and exterior surfaces is positioned between inner and outer forms, the inner and outer spaces thus created are filled with a cementitious substance forming a mold having inner and outer mold segments with their mold faces formed against the non-porous pattern. The concrete molds are provided with various assembly mechanisms and shipped in matched sets to producers for use as forms in the production of the structural modules.