A blockout apparatus, for use in creating passageways through prefabricated concrete structural members, has at least one hanger members integrally molded with the blockout apparatus as a dome projecting above the body of the blockout member that can be used to support conduits inserted through the passageway. A wedge nut can be inserted into the hanger members and twisted to lock the wedge nut in place. The wedge nut can be installed before the blockout apparatus is positioned within the concrete form for the manufacture of the prefabricated concrete structural member, or after the concrete structural member has been formed. Typical usage of the blockout apparatus is to create passageways through the T-Beam of Double-T panels so that conduits can pass through the void corresponding to the blockout apparatus. Mounting devices that support the conduits can be engaged with the wedge nut and provide support for one or multiple conduits.

A system includes a lead-sleeve coupled to a platform. The platform attaches to a sheet metal having alternating peaks and valleys, and the platform includes a block-out component that conforms to a valley of the sheet metal. The system also includes an indicator system coupled to a cap of the lead-sleeve, where the indicator system protrudes through the concrete after the concrete is poured and solidified around the lead-sleeve.

A building system (5) including a panel system (10) and a formwork system (78). The panel system (10) includes a plurality of modular panels (12) arranged to fit with one another in a predetermined grid arrangement (13) to form side walls of a building in a fitted condition. At least the bottom sides (24) of each of the modular panels (12) includes a plurality of apertures (34) that are arranged at predetermined spaced apart locations along the bottom side (24) so as to coincide with the predetermined grid arrangement (13). The formwork system (78) includes a plurality of modular formwork members (80) that are associated with each of the modular panels (12) to provide a supporting slab (72) having slab apertures (76) to allow coupling with the modular panels (12). Modular panels (12), formwork members (80) and associated methods of use are also disclosed.

A building system (5) including a panel system (10) and a formwork system (78). The panel system (10) includes a plurality of modular panels (12) arranged to fit with one another in a predetermined grid arrangement (13) to form side walls of a building in a fitted condition. At least the bottom sides (24) of each of the modular panels (12) includes a plurality of apertures (34) that are arranged at predetermined spaced apart locations along the bottom side (24) so as to coincide with the predetermined grid arrangement (13). The formwork system (78) includes a plurality of modular formwork members (80) that are associated with each of the modular panels (12) to provide a supporting slab (72) having slab apertures (76) to allow coupling with the modular panels (12). Modular panels (12), formwork members (80) and associated methods of use are also disclosed.

A pocket isolator form, for placement around a footer before a concrete slab is poured, is formed from plural barrier sections. At least some of the sections are curved, so that a sharp re-entrant corned is not formed in the concrete slab. The curved sections may be assembled with straight sections to form barriers of various form shapes which avoid the creation of sharp re-entrant corners in the slab.

A bracket holds a rigid or flexible tube during the pouring of a concrete slab. The bracket has a base and a housing connected to the base. The tube curves around a first tube support on the housing before passing through an opening in the bottom of the housing. The tube and any members inside the tube are cut off so they end inside the housing and are then covered by a housing cap. The base is fastened to a form for the concrete slab. The height of the housing relative to the base is adjusted to place the cap at the planned surface of the concrete slab. After the concrete slab is formed the cap is removed and the cut members inside the housing are connected to other members or devices.

A bracket holds a rigid or flexible tube during the pouring of a concrete slab. The bracket has a base and a housing connected to the base. The tube curves around a first tube support on the housing before passing through an opening in the bottom of the housing. The tube and any members inside the tube are cut off so they end inside the housing and are then covered by a housing cap. The base is fastened to a form for the concrete slab. The height of the housing relative to the base is adjusted to place the cap at the planned surface of the concrete slab. After the concrete slab is formed the cap is removed and the cut members inside the housing are connected to other members or devices.

A concrete structure forming system includes a panel formed of a concrete material and a void former disposed on a section of the panel that is less than an entirety of the panel. The void former is monolithically formed in a single piece of a plastic material. The void former is removable from the panel in the single piece to leave a recess in the panel when the concrete material has reached a cured state.

A concrete structure forming system includes a panel formed of a concrete material and a void former disposed on a section of the panel that is less than an entirety of the panel. The void former is monolithically formed in a single piece of a plastic material. The void former is removable from the panel in the single piece to leave a recess in the panel when the concrete material has reached a cured state.

A building system (5) including a panel system (10) and a formwork system (78). The panel system (10) includes a plurality of modular panels (12) arranged to fit with one another in a predetermined grid arrangement (13) to form side walls of a building in a fitted condition. At least the bottom sides (24) of each of the modular panels (12) includes a plurality of apertures (34) that are arranged at predetermined spaced apart locations along the bottom side (24) so as to coincide with the predetermined grid arrangement (13). The formwork system (78) includes a plurality of modular formwork members (80) that are associated with each of the modular panels (12) to provide a supporting slab (72) having slab apertures (76) to allow coupling with the modular panels (12). Modular panels (12), formwork members (80) and associated methods of use are also disclosed.