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.

An adjustable form for installing across an opening at an edge of a concrete slab includes a form member having a first form portion and a second form portion slidably connected to reach an adjustable effective length of the form member. The adjustable form further includes an extension mechanism connected between the first and second form portions and is operable to vary the effective length of the form member to fit across the opening. Tension exerted between the first and second form portions at the effective length is sufficient to keep the adjustable form in place.

A beam for formwork systems, with a transverse cross-section that is symmetrical with respect to an axis of symmetry and having, in succession:

a first portion with two C-shaped profiles, which are arranged mirror-symmetrically with respect to the axis of symmetry, with mutually opposite cores and cavities directed outward, connected by a plate for connection between two mirror-symmetrical wings thereof,

a connecting element, which extends along the direction of the axis of symmetry, between the plate for connection and a base,

a second portion with two protrusions which extend from the base and are provided with transverse end elements.

Various implementations described herein are directed to a load bearing ledger fitting, a modular header beam, a perimeter safety deck, a multi-purpose bearing plate, and a mega-shore bearing plate of an integrated construction system.

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 tie assembly for use during construction of monolithic cast-in-place concrete floor slabs bearing on a masonry stem wall. The tie assembly connects to one or more header blocks of the stem wall, and the tie assembly is configured to retain a concrete form member in place during the pour and curing period of the cast-in-place concrete. The tie assembly has a removable tab member with one or more slots for receiving a wedge stake, which braces the form member against lateral forces caused by the wet concrete. A mechanical fastener is driven through an upper portion of the wedge stake and concrete form, and the insertion tip of the mechanical fastener connects to a reinforcement holder for retaining a reinforcing member in place.

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.

According to an example aspect of the present invention, there is provided a scaffolding arrangement to be attached to a deck structure, comprising a set of aims (2) including a carrier beam (5) for carrying the working levels and support structures needed in work, an attachment frame (1) for attaching the set of arms to the upper surface of the deck structure and platforms (103, 104, 105) for forming working levels.

A formwork system (100) includes a rebate board (105) having a generally L shaped profile in end view, the rebate board (105) having a first arm (110) and a second arm (120), the first and second arms (120) being angled at about 90 degrees relative to each other, the second arm (120) being securable to an upper portion of a formwork bottom board (200). The system (100) includes a brace (400) having a first engagement formation (410) configured to engage with the first arm (110), and a second engagement formation (435) configured to engage with a peg (220) or other fixed member.

A form bracket for supporting a wall of a concrete panel form at a casting slab includes a first planar member having a lower surface configured to engage a casting slab. A second planar member is coupled with the first planar member. The second planar member has a front surface disposed perpendicular to the lower surface of the first planar member and configured to engage a wall of a concrete panel form. In some implementations, the first and second planar members have different dimensions so as to be capable of being reoriented to accommodate different sized walls. A pair of support members extend between an upper portion of the first planar member and a rear portion of the second planar member. The pair of support members are spaced apart to define a void that is configured to matably receive a second form bracket in a stacked arrangement.