An insulating concrete form system uses a stacked arrangement of foam panels to receive pourable concrete to construct a concrete wall of a building structure. Webs located in the panels hold the panels in parallel spaced relation. The webs have laterally extending ties. The ties have one or more projecting members having arms extending into grooves adapted to receive rebar. Outwardly extending truss member are used to fasten multiple webs during shipping. Couplings releasably connect the ties to end portions of the web and allow the ties to be moved along the length of the end portions as desired.

The instant invention provides a secure holding spacer unit to be used when assembling permanent stay-in-place formworks, also known as permanent stay-in-place molds, which are commonly used for the construction of concrete structures by putting together two boards or panels held together by a series of holding spacer units that are securely attached or hold to the surfaces of the cement panels by fastening means that pass through the width of the panels. The holding spacer units are selectively distributed within the internal cavity of the formwork and are attached to the panels, and are designed so that the panels remain permanently attached to the units of the spacers, to restrict the outward movement of said panels when pouring the concrete mix in the unit, which results in a permanent formwork with smooth exterior surfaces.

A tie for a concrete formwork comprises: a tie anchor configured to be embedded in a block of insulating material, the tie anchor having a first connecting feature accessible from a concrete-facing surface of the block; and a tie member having a second connecting feature configured to connect to the first connecting feature of the tie anchor. The tie member has at least one connector for connecting to an abutting tie member.

A tie system and method for forming a wall from a hardenable building material over a footing. The tie system includes multiple wall ties configured to be directly interconnected to form a wall tie stack such that multiple wall tie stacks can be positioned over the footing in a spaced apart, vertically extending arrangement. Each wall tie includes first and second planar surfaces to be directly fastened to respective first and second panel structures. In one embodiment, the tie system includes tabs for supporting multiple insulation panels positioned between the vertically extending tie stacks and between the first and second panel structures.

Plastic cross ties constructed of a plastic pipe with two separate connectors attached to both ends act as a unit to position opposing masonry shells as part of a stay-in-place concrete form system. A three part cross tie assembly constructed of a pipe and concrete from connectors are snapped together with zip rods eliminating the need for screwing, nailing or gluing.

A collapsible formwork element, the element including: a pair of opposing side wall panels; and at least one connector member extending between the side wall panels, wherein the formwork element is movable between an expanded configuration, wherein the opposing panels are spaced apart, and a collapsed configuration, wherein the opposing panels are relatively closer together.

Plastic cross ties constructed of a plastic pipe with two separate connectors attached to both ends act as a unit to position opposing masonry shells as part of a stay-in-place concrete form system. A three part cross tie assembly constructed of a pipe and concrete from connectors are snapped together with zip rods eliminating the need for screwing, nailing or gluing.

A sealing plug has an elastic sleeve of thimble-like basic shape. A wound-up band of the sealing plug is inserted in the sleeve. The number of windings or turns of the band can be reduced by rotating the inner end of the band, wherein the outside diameter of the band, and hence the outside diameter of the elastic sleeve, widens. The band can be inserted in pretensioned state into the sleeve and can slacken after insertion into an anchor hole. The band can be expanded in the anchor hole beyond the slackened state of the band. The sealing plug further has a latching mechanism, which prevents back-rotation of the expanded sleeve. The sealing plug enables a radial expansion, and hence a sealing of anchor holes of different diameter, without shortening of the axial sealing surface of the sleeve.

An apparatus for connecting a pair of wall concrete form sections disposed at a relative distance from each other defining a space therebetween to receive concrete to be poured, the apparatus preventing the sections from separating, the apparatus comprising an elongated locking pin, a form connector to be rotatably, and releasably affixed to a form, and a pin retainer affixed to the arm defining a channel therein sized to be engaged within the engagement slot whereby the pin is placed through corresponding holes in adjacent forms and the pin engages a first form, extends through the relative distance between the forms, exits through an aligned hole in the second form, and the channel of the pin retainer attached to the second form engages the engagement slot on the pin thus providing a fixed distance between the forms and preventing the form separation when concrete is poured.

A building form system including a plurality of forms for assembling into a wall template that is filled with concrete to create a building wall. The system includes a corner form assembly comprising an inner corner form and an outer corner form for disposition on a corner footing. The outer corner form includes walls angled from a bend. A pair of connectors are disposed on opposite ends from the bend. The inner corner form includes corresponding connectors for attachment to the outer corner form around a preset vertical rebar in the corner footing. The system further includes a base form extending between a first pair of connectors that include a peripheral wall disposed directly therebetween and the second pair of connectors for mating engagement with the first that include an inset wall spaced inwardly therefrom. Spacing between the peripheral and inset wall of adjacent base forms accommodating vertical rebar.