A device for forming a void in cured concrete, the device including a circular base with at least one hole through the base, an elongate rod coupled to the base, and a sleeve with a longitudinal axial bore extending from a first end of the sleeve to and through a second end of the sleeve, the axial bore sized and shaped to receive the elongate rod in slidable engagement within the axial bore and a length of the sleeve being greater than or equal to a length of the elongate rod. The base is coupled to concrete formwork and concrete is poured over the sleeve and the elongate rod and allowed to cure. The rod is removed from the sleeve and the sleeve is removed from the cured concrete to form the void in the cured concrete.

A sleeve for forming a channel through a concrete slab is described herein. The sleeve includes a sleeve body with top and bottom ends extending along a longitudinal axis, wherein the top end is wider than the bottom end. The sleeve includes an attachment flange attached to the bottom end that extends laterally outward with respect to the longitudinal axis. The attachment flange may be secured to a concrete form. An alternative sleeve has an attachment mechanism protruding from the first end of the sleeve body for facilitating the attachment of the sleeve body to a concrete form. In some embodiments, the sleeve can also include a removal mechanism disposed at the second end of the sleeve body to facilitate removal of the sleeve body from the concrete slab. Various sleeve configurations are described, some of which are reusable and some of which are one-time use only.

Devices and methods for forming voids or cavities in concrete such that reinforcing bars can be used to connect different pours of concrete, the devices including an insert having a base and an elongate member extending from the base, and the method including coupling the insert to formwork, pouring concrete into the formwork, which surrounds the insert, allowing the concrete to partially cure, such that it retains its shape, removing the formwork and insert to form a void in the partially cured concrete, inserting a reinforcing bar into the void, applying adhesive to adhere the reinforcing bar to the concrete, and pouring concrete around the reinforcing bar, such that the reinforcing bar joins the two pours of concrete together via the void and adhesive.

An assembly for realising a lamp incorporated into a masonry wall, comprises a lamp housing that delimits a lamp seat suitable to house a lamp body, and a mould suitable to be removably fixed to the lamp housing and to the inner side of a formwork in which the pouring is carried out, so as to realise, after pouring cement in the formwork, a light-emission cavity open on the outer surface of the masonry wall. The mould is suitable to rigidly support the lamp housing before and during the pouring of the cement and is provided with mould fastening means suitable to removably fix the mould to the inner side of the formwork.

A sleeve for forming a channel through a concrete slab is described herein. The sleeve includes a sleeve body with top and bottom ends extending along a longitudinal axis, wherein the top end is wider than the bottom end. The sleeve includes an attachment flange attached to the bottom end that extends laterally outward with respect to the longitudinal axis. The attachment flange may be secured to a concrete form. An alternative sleeve has an attachment mechanism protruding from the first end of the sleeve body for facilitating the attachment of the sleeve body to a concrete form. In some embodiments, the sleeve can also include a removal mechanism disposed at the second end of the sleeve body to facilitate removal of the sleeve body from the concrete slab. Various sleeve configurations are described, some of which are reusable and some of which are one-time use only.

An assembly for realising a lamp incorporated into a masonry wall, comprises a lamp housing that delimits a lamp seat suitable to house a lamp body, and a mould suitable to be removably fixed to the lamp housing and to the inner side of a formwork in which the pouring is carried out, so as to realise, after pouring cement in the formwork, a light-emission cavity open on the outer surface of the masonry wall. The mould is suitable to rigidly support the lamp housing before and during the pouring of the cement and is provided with mould fastening means suitable to removably fix the mould to the inner side of the formwork.

A reusable form for creating conduit paths in concrete slabs is described. The form comprises a flexible tube that is positioned prior to pouring a concrete slab. The form includes a keep to keep material out of the hole formed by the form. The form also includes a key structure to permit easy removal of the form once the concrete is set. The system further includes a sighting device to permit rapid and precise alignment for placement of a form when forming conduits in a multi-level building. An accessory is also provided permitting filling in the opening created by the form once wiring, piping and other objects have been installed within the conduit.

An adjustable beam sleeve device with two telescopically mounted first and second sleeve assemblies with movable bowl assemblies at the distal ends. The first sleeve and the second sleeve are selectively set in relative position by means of a screw to form a telescopic column. The bowl assemblies are urged towards each other by an elastic string that is kept taut to produce snug fit when the adjustable beam sleeve is used between forms used to contain the concrete when poured. After the concrete is poured, the string is cut or the knots at the ends are removed along with the bowl assemblies resulting in a passage through the poured concrete after it is cured.

A reusable form for creating conduit paths in concrete slabs is described. The form comprises a flexible tube that is positioned prior to pouring a concrete slab. The form includes a keep to keep material out of the hole formed by the form. The form also includes a key structure to permit easy removal of the form once the concrete is set. The system further includes a sighting device to permit rapid and precise alignment for placement of a form when forming conduits in a multi-level building. An accessory is also provided permitting filling in the opening created by the form once wiring, piping and other objects have been installed within the conduit.

A pre-form for drain installation is provided. The pre-form comprises a cap portion, a bottom portion, and an outer portion. The cap portion defines an interior for receiving a top end of an upwardly extending drain pipe and is configured to cover an opening of the drain pipe. The bottom portion is detachedly coupled to the cap portion and comprises an aperture through which the drain pipe may pass so as to enable the bottom portion to slide along the length of the drain pipe. The outer portion is coupled to and extends upwardly from the bottom portion so as to define a perimeter for displacing concrete proximate to the drain pipe when inserted into a wet concrete flooring surface.