A bulkhead assembly for use with a concrete form and a first reinforcement bar is disclosed. The concrete form may have first and second spaced form sides; and the first reinforcement bar may be disposed between and may extend longitudinally of the spaced form sides. The bulkhead assembly may have a first pair of channel assemblies, each including a channel member and an elastomeric member. The elastomeric member may be positioned longitudinally in the channel member, with a portion of the elastomeric member extending outward transversely from the channel member. The portion may include an outer end that extends longitudinally of the channel member. The channel assemblies may be positioned on opposite sides of the reinforcement bar, with the elastomeric member outer ends facing one another and contacting the reinforcement bar, thereby inhibiting uncured concrete from passing between the channel assemblies when uncured concrete is poured into the concrete form.

A formwork for providing a plinth with concrete frame and with exposed horizontal reinforcing bars, is disclosed. The framework has a base the shape of which in plan view corresponds to the concrete frame. Each side of the base is provided with inner and outer lateral containment walls which extend vertically from the base to make a casting chamber for the concrete. The inner walls have a plurality of openings for the insertion from above of a plurality of longitudinal reinforcing bars. At least one of the outer walls is provided with a plurality of openings for the insertion by transverse sliding of a plurality of transverse reinforcing bars. The openings are provided with inflatable elements which are configured to transition from a deflated configuration, in which the bars can freely slide in the openings, to an inflated configuration, in which the bars are locked in position. The chamber is watertight in order to prevent concrete from coming out during casting.

A stay-in-place footing form assembly includes a plurality of inner form boards serially aligned and joined by inner joining brackets, a plurality of outer form boards serially aligned and joined by outer joining brackets, a plurality of lower spacing rails, each disposed between and connecting base brackets in the inner and outer joining brackets aligned laterally, and a plurality of upper spacing rails, each disposed between and connecting top brackets in the inner and outer joining brackets aligned laterally. The lower spacing rails include first rebar receptacle(s) for seating horizontal rebars on the rails, and the upper spacing rails include second rebar receptacle(s) for holding vertical dowel rebars therein. The inner and outer form boards are insulation boards that have an ability of absorbing lateral forces of earthquakes exerted to a concrete footing formed in the stay-in-place footing form, and an ability of insulating the concrete footing from surrounding temperatures.

A cement form includes a unitary body portion having a first surface arranged vertically and configured to support a volume of cement, a second surface arranged horizontally and configured to contact a ground support surface, a foam material, and a detachable portion. The cement form may include a connector groove formed in the weight bearing surface and extending along at least a portion of a length of the body portion. The connector groove is configured to receive a connecting member that extends between adjacent positioned cement forms. The detachable portion may be positioned adjacent to the connector groove.

A formwork for manufacturing a concrete structure which is composed of one or several folding portions, provided with one or several hollow portions which in an unfolded and stretched condition have the shape of the contours of portions of the concrete structure to be formed, whereby the formwork can be placed on a bottom in an initial condition and whereby, by pouring or pumping concrete slurry in the hollow portions of the formwork, the formwork can be taken from the initial condition to the stretched condition so as to form the respective portions of the concrete structure.

A system for retaining a flowable and curable building material to form a portion of a foundation includes side walls disposed in a predetermined configuration having a first side wall and a second side wall, and at least one component having an interior cavity disposed in one of the side walls. A bracket assembly includes at least one inwardly bounding reinforcement post and at least one outwardly bounding reinforcement post, a separator bar having a plurality of apertures sized to receive and retain each of the reinforcement posts at locations corresponding to nominal widths of the at least one component. A barrier is disposed between the outwardly bounding and inwardly bounding posts. The component in the side wall is retained in the foundation after the building material cures. The barrier prevents backfill from filling a volume between the outwardly bounding and inwardly bounding posts.

A cement form includes a first surface arranged vertically and configured to support a volume of cement, a second surface arranged horizontally and configured to contact a ground support surface. The cement form includes a foam material and has a wedge cross-sectional shape.

A stay-in-place footing form assembly includes a plurality of inner form boards serially aligned and joined by inner joining brackets, a plurality of outer form boards serially aligned and joined by outer joining brackets, a plurality of lower spacing rails, each disposed between and connecting base brackets in the inner and outer joining brackets aligned laterally, and a plurality of upper spacing rails, each disposed between and connecting top brackets in the inner and outer joining brackets aligned laterally. The lower spacing rails include first rebar receptacle(s) for seating horizontal rebars on the rails, and the upper spacing rails include second rebar receptacle(s) for holding vertical dowel rebars therein. The inner and outer form boards are insulation boards that have an ability of absorbing lateral forces of earthquakes exerted to a concrete footing formed in the stay-in-place footing form, and an ability of insulating the concrete footing from surrounding temperatures.

A cement form includes a first surface arranged vertically and configured to support a volume of cement, a second surface arranged horizontally and configured to contact a ground support surface. The cement form may include at least one of a foam material and a polymer material. The cement form may include a wedge cross-sectional shape.

A cement form includes a unitary body portion having a first surface arranged vertically and configured to support a volume of cement, a second surface arranged horizontally and configured to contact a ground support surface, a foam material, and a detachable portion. The cement form may include a connector groove formed in the weight bearing surface and extending along at least a portion of a length of the body portion. The connector groove is configured to receive a connecting member that extends between adjacent positioned cement forms. The detachable portion may be positioned adjacent to the connector groove.