Embodiments of the Concrete Form include a form tube, chamfer disk, and one or more cross-members. The cross-members are comprised of a center pivot aperture, two bolt guides, which are formed by the cross-members, end clamps, and an optional clamp. The chamfer disk is a disk that sits atop of the form tube and forms side chamfers in positive relief when placed upon the form tube when the concrete cures. The optional conduit clamp can be used to hold any conduit, tube or any other item during the pour. In another embodiment of the Concrete Form is comprised of a form tube, chamfer disk, end clamps, four or more bottom slide arms, and four or more top slide arms.

A compliant trim for use between concrete slabs is disclosed, intended to seal the joints and provide a decorative cover over the forms. The compliant trim is placed on the forms prior to the pouring of concrete. The compliant trim contains features which anchor the compliant trim to the slab at numerous points along its length, thereby constraining the compliant trim against any shrinkage effects, and doing so in a manner that introduces minimal stress concentration into the slabs. When the compliant trim is anchored to both of the adjacent slabs, it is capable of following slab motions due to thermal expansion or other environmental effects. The surface of the compliant trim may be used to support the screed. Additionally, the compliant trim may be used to produce a chamfered or radius edge, thereby eliminating the need to radius-trowel the slab.

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 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.

Embodiments of the Concrete Form include a form tube, chamfer disk, and one or more cross-members. The cross-members are comprised of a center pivot aperture, two bolt guides, which are formed by the cross-members, end clamps, and an optional clamp. The chamfer disk is a disk that sits atop of the form tube and forms side chamfers in positive relief when placed upon the form tube when the concrete cures. The optional conduit clamp can be used to hold any conduit, tube or any other item during the pour. In another embodiment of the Concrete Form is comprised of a form tube, chamfer disk, end clamps, four or more bottom slide arms, and four or more top slide arms.

Embodiments of the Concrete Form include a form tube, chamfer disk, and one or more form cross-members. The form cross-members are comprised of a center pivot, two bolt guides, which are formed by the cross-members, and an optional clamp. The chamfer disk is a disk that sits atop of the form tube and forms side chamfers when placed upon the form tube when the concrete cures. The chamfer disk is a separate formed or molded piece that will sit on top of the tube form in order to form a chamfer in the concrete. The chanfer disk is a ring-shaped device with the chamfer formed in positive relief under the ring of the chamfer disk. The optional clamp can be used to hold any conduit, tube or any other item during the pour.