Abstract: A rebar support for use in forming concrete structures, includes a body formed from a single piece of an elongated metal substrate bent to define a first foot, a second foot positioned in spaced relation to the first foot, and a spanning segment that is vertically elevated, spans between the first foot and the second foot and has at least one rebar receptacle.

Abstract: An insulated leaching chamber and a method of fabricating the same from a block of expanded polystyrene. The insulated leaching chamber includes a body of rigid air-permeable insulating material, having at least one arch centrally positioned between opposed outwardly projecting terminus. The at least one arch has an convex upper surface, and a concave lower surface. The use of the insulated leaching chamber reduces freezing and promotes increased biological activity.

Abstract: An apparatus for creating a void under a structural concrete slab which includes a body having a bottom surface with projections which deform and then collapse after a preset displacement in response to subgrade compressive stress.

Abstract: A unique one-piece molded insulating and drainage panel for use for basement subterannean walls is disclosed. The panel is molded from expanded polystyrene having very low water permeability. When installed, the panel has two sides having vertically oriented grooves on both sides. The grooves abutting the foundation wall are typically rectangular whereas the vertical channels on the outside wall are specifically designed to be self-clearing to avoid blockage by backfill. Typically a bell-bottom shaped narrow opening and a wider inner channel is used.

Abstract: A unique wall panel is constructed from expanded polystyrene beads in an expanded polystyrene mold with structural members embedded in it during the molding process. The structural members are in the form of two by four studs placed at sixteen inch centers. Adjacent panels have interlocking grooves and ridges which fit together. The advantage of the present invention is that a total insulated wall is created with no cracks or spaces in the insulation. These lightweight panels can be carried to the building site, where base and top plates are applied and the panels interlocked to form a perfectly insulated wall.

Abstract: A tree seedling container, constructed from expanded polystyrene, rectangular in shape and having cavities molded therein. The cavities are tapered from top to bottom and are open ended. The inner cavity walls are constructed in a castellated form having one or more raised portions extending vertically downwards the entire depth of the cavity. Grooved portions intersperse the raised castellated portions. Either one or the other of the grooved or raised portions is coated with a chemical to prune the lateral roots of a tree seedling which come into contact therewith.