Abstract: A synthetic plastic wall tie of variable lengths for use with concrete forms. The tie has a pair of T-shaped end sections at its opposite ends. Each of the T-shaped end sections including a stem having a sufficient thickness for receiving an end of a screw in threaded engagement therewith. The T-shaped end sections have parallel cross pieces at opposite ends of the tie. An intermediate wall tie section connects the T-shaped end sections together. The intermediate wall tie section has a pair of round flange-like water-stops extending radially outwardly out of the intermediate wall tie section and are joined therewith in integral one-piece assembly therewith. The water-stops serve to inhibit water flow axially of the wall tie and through a concrete wall structure where the tie is embedded. The round flange-like water-stops further serve to provide means for locating reinforcing rods extending at right angles to the wall ties when the wall ties are mounted in a concrete form.

Abstract: A modular synthetic plastic concrete form structure for forming a concrete wall or free form or an enclosure having a curved corner. One form of the structure includes a pair of modular concrete impervious foamed forming panels each comprised of a series of modular foamed concrete forming sections stacked on top of one another and also disposed in end-to-end relation. The structure further includes a foamed curved corner form structure comprised of a series of arcuately curved corner sections stacked on top of one another providing a radially outer continuous curved corner area for forming a curved concrete corner. The sections each have means on upper and lower edges and at opposite vertical edges of interlocking the section in stacked end-to-end engagement with one another. The panels are positioned in spaced opposed relation.

Abstract: A synthetic plastic concrete wall tie comprising a pair of triangular truss sections disposed in end-to-end relation, an intermediate web section joining the truss sections of the apexes of triangles of the triangular truss sections, and T-shaped end sections at opposite ends of the tie with each end section being formed integral with its stem joined with the associated triangular truss section, the cross piece of each T-shaped end section comprising means for anchoring the tie to a slotted wall section when assembled therewith.The tie is usable with modular foamed plastic concrete form structure having a pair of modular concrete forming panels. The panels are comprised of a series of modular concrete forming sections stacked on top on one another in secured assembly and also disposed in end-to-end relation.

Abstract: A modular synthetic plastic concrete form structure which comprises a pair of modular concrete impervious forming panels each comprised of a series of modular concrete forming sections stacked on top on one another and also disposed in end-to-end relation. The sections each having means on its upper and lower edges and its opposite vertical edges for interlocking the sections in engagement with one another. The panels each being comprised of a synthetic plastic and the panels are positioned in spaced opposed relation. Tie slots are provided in the opposed sections positioned in longitudinally spaced relation along the upper and lower edges. Synthetic plastic ties are provided with each having opposite enlarged tie ends retainingly engaged in the tie slots securing the sections in opposed spaced relation.