Abstract:
The present invention relates to a formwork arrangement for forming a suspended concrete floor slab comprising a change in level in an underside thereof, a support bracket for use with such a formwork arrangement, and a method for employing the support bracket and formwork arrangement.
Abstract:
A scaffold arrangement for repairing the edge structure of a concrete bridge (1). A steel-structured bent (2) comprises a vertical beam (9) that can be anchored by support members (3, 4) to the upper surface of the bridge. The vertical beam (9) extends to a distance above the upper surface (11) of the bridge. An upper horizontal beam (12) is rigidly secured to the upper end of the vertical beam (9) and the horizontal beam (12) extends substantially transversely relative to the longitudinal direction of the bridge and over the edge of the bridge. A vertical column (15) is secured to the end of the upper horizontal beam (12). The lowerend of the vertical column (15) extends down from the edge of the bridge. A lower horizontal beam (16) is secured to the vertical column (15) and extends in alignment with the upper horizontal beam. The lower horizontal beam (16) comprises a first beam portion (17) extending from the vertical column (15) to a distance below the bridge so that mould walls (5, 6) can be fitted onto the first beam portion (17), and a second beam portion (18) extending from the vertical column (15) to an opposite direction relative to the first beam portion (17) and supporting an access bridge (8). A longitudinally adjustable support bar (19) is pivotally connected at one end to the first beam portion (17) and at the other end is supportable against the lower surface of the bridge.
Abstract:
The invention concerns a formwork wall with variable geometry for producing the lower surface of a spiral or helical concrete staircase. The invention is characterised in that it comprises: a deformable formwork skin (1) associated at the underside with a rigid and integral support structure (2) in its angular portion (4) to be spaced away therefrom in the wings (5) thereby producing an adjusting space and, means (3) for modifying the spacing between the structure (2) and the skin (1) such as screw jack (3)/captive nut type actuators which as they evolve force the skin (1) to be deformed by being supported at the tip (2') of the wings of the rigid structure (2).
Abstract:
Formwork for rapidly placing forms for a curved staircase of any shape giving an exceptional finish, including a lower member or base and upper members or riser forms. The formwork further comprises horizontal supporting members (16) for supporting said base (10) made of at least one plate of synthetic material. Said supporting members consist of longitudinal telescoping tubular cross-members (18), assemblies (19) for attaching the supporting members to the walls (12, 13) of the stairwell, panels for forming the riser forms and assemblies for attaching said panels. The base (10) may be prepared in advance in a workshop, delivered in a number of sections (10a, 10b, ...) and reused for producing a number of similar staircases.
Abstract:
A circular staircase formwork system comprises a lower frame consisiting of sliding cross-members (1.1. to 2.5) with adjustable end shafts (2.1. to 2.3) and designed to receive a variable shape mould (4) and compensation units (5) connected to said mould by means of openings (5.1), and also an upper frame consisting of a pivot system (6) with adjustable angle (6.1) on which are mounted the support panels (7) serving as formwork for the raisers (8). All these components can be connected or secured to a slide rail representing a wall.
Abstract:
An adjustable Formwork climber apparatus (10) is described which may be used for casting walls having an overhanging portion. The climber is used for supporting both vertical and horizontal formwork on the same supporting brackets. Adjustment mechanisms are provided for positioning or tilting the vertical and horizontal formwork. The adjustable formwork climber can be used both for casting continuous vertical structures, and for structures having an overhanging or protruding portion such as a ring-beam.
Abstract:
A method for mounting a cross-beam (1) to a sheet-pile wall (2) for obtaining a quay wall (3), wherein the cross beam (1) is composed of cross-beam segments (la, 2a, 3a, etc.) comprising of first placing a sheet-pile wall (2) in the water, which partially extends above the water surface and preferably is compiled from tubular poles (8) and sheet piles (9) mounted between the tubular poles in a regular pattern, after which cross-beam forming material (10) is applied against the sheet-pile wall (2) by means of a shell structure (13) which supports against the sheet-pile wall, mounting the cross-beam segments (la, 2a, 3a, etc.) according to an intermittent pattern to form a full cross beam (1). Further are provided a quay wall (3), a shell structure (13), a pontoon (30) and cross beam (1) or cross-beam segments (la, 2a, 3a, etc).
Abstract:
A flow-through concrete edge forming system (10) utilizes a body member (12) that has perforations (20) thereon. The body member (12) is placed at an elevation transition area of a monolithic slab (S) as an edge forming form. Once the slab (S) is poured, a parge coating (P) is placed on the outer surface of the body member (12) such that the parge coating (P) either binds to the outer surface or penetrates the body member (12) through a series of perforations on the body member (12) in order for the parge coating (P) to bind with the concrete of the slab (S) which has yet to set thereby producing a clean and solid finish of the outer surface of the slab (S) at the transition area. The body member ( 12) may have either a rectangular profile (1 12), a keyhole profile (214) or may have the perforations (20) on a series of inwardly directed deformations (18).
Abstract:
Ce mécanisme comprend une cage (9) dans laquelle sont disposés au moins deux arbres (6) interdépendants, emboîtés l'un dans l'autre avec entre eux des intervalles successifs réglables, chaque arbre comportant une partie filetée (6a) traversant un écrou (11) logé dans la cage et portant un support (4) d'emmarchement; un arbre (12) est disposé parallèlement aux arbres (6), traverse les différents écrous (11) et est équipé d'excentriques (13) associés aux écrous (11) respectifs; chaque excentrique (13) est solidaire en rotation de l'arbre (12) et coopère par pression avec une tête (14) du support (4) associé pour fixer son inclinaison à une valeur prédéterminée. Ce mécanisme permet de régler aussi bien les espacements variables entre les arbres emboîtés (6) que l'inclinaison simultanée des différents supports (4), et évite donc de devoir utiliser des dispositifs distincts pour chaque réglage.
Abstract:
A casting mould device for casting concrete and similar, e.g. base plates, walls, columns, recesses and similar, characterized by comprising a number of transverse supports (3) with essentially triangular shape with a post (4) which is connected to a base part (5), and preferably a force transferring brace part (6) extending between the post and the base part, the posts of the transverse supports carrying a mould space delimiting element, preferably with the aid of a number of support beams (1) which are fastened to the transverse supports, said base parts transferring the mould pressure exerted on the mould space delimiting element in the casting operation, onto a base against which the base parts apply.