Contech Engineered Solutions LLC

Roger L Brockenbrough

Daniel P Cobb

James C Schluter

Michael P Stone

Michael Katona

A plastic, corrugated open bottom chamber includes features such as one or more of (i) sub-corrugation features on corrugation crests and/or corrugation valleys, (ii) stiffening fingers on the bottom of chamber foot portions, (iii) a viewport configuration that intersects only a single corrugation crest and (iv) a unitary end wall. A method of producing chambers with or without a unitary end wall using a common mold tool is also provided. A method of interconnecting chambers to form a chamber rows is also provided.

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Pittsburgh, PA, United States of America

Roger L Brockenbrough