Apparatus for forming a multi-walled containment trench

E - Fixed Constructions – 02 – D

Patent

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Details

E02D 17/06 (2006.01) E02F 5/10 (2006.01) E03F 3/04 (2006.01)

Patent

CA 2139428

A system for forming a multi-walled trench (10) comprising a pair of frame members (46, 48), each having a horizontal sec- tion (50) and a section depending from the horizontal section (50); a holding pan (38) having sidewalls exterior to the depending portion of the frame members (46, 48), a bottom floor disposed between the sidewalls, and flanges on each sidewall extending parallel to the plane of the horizontal section (50) of the frame members (46, 48) and away from the depending portion; an outer wall (14) disposed within the holding pan (38) having an inside surface (20) and an outside surface (26), the outside surface (26) of the outer wall (14) engaging at least a portion of the sidewalls and the bottom walls of the holding pan; an inner wall (16) dis- posed within the outer wall (14) having an inside surface and an outside surface, the inside surface of the inner wall (16) engaging at least a portion of the inner surface of the depending portion of the frame members, and a cavity (28) being formed between the outside surface (26) of the inner wall (16) and the inside surface (20) of the outer wall (14).

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