Abstract: The disposable pet utility system (10) for providing prepackaged absorbent cat litter and the like for household pet care, includes a container (11) having creases at each of its corners for collapsing the container about its contents during shipment and disposal, and for erection during use. The container (11) includes a top wall (40), having perforations and creases formed in the top wall (40) to allow sections (41) and (42) of the top wall to tear and separate from each other to fold back reversibly and to be positioned underneath the container (11) for a rigid support. After the contents of the container (11) have been used, the sections (41) and (42) of the top wall are resealed and the container (11) is collapsed so as to allow a compact and sanitary method of disposal.

Abstract: A pile jacket (15) is placed about a pile (14) before backfill earth (45) is filled in about the pile. The pile jacket (15) is formed of laminated sheet material (20) having opposed, parallel spaced outside sheets (21 and 22) and with intermediate supporting ribs (24) that maintain the outside sheets in spaced relationship. The indentations (48) made by the backfill earth (45, 46) in the pile jacket generally do not destroy the flat abutment of the inside sheet (21) with the surface of the pile, so that a slip plane is maintained between the pile jacket and the pile, permitting the pile jacket to move downwardly when the backfill material settles without transmitting a major downward load from the backfill material to the pile.