oldcastleprecast.com/wilsonville Issue Date: File Name: PO Box 323, Wilsonville, Oregon 97070-0323 Tel: (503) 682-2844 Fax: (503) 682-2657 48" DRYWELL MANHOLE 2018 020-48MH-D 48" DRYWELL MANHOLE 48" DRYWELL MANHOLE 2.0 FRAME GRADE RING DRYWELL RISER DRYWELL BASE AND COVER ECCENTRIC CONE FLAT TOP CONCENTRIC CONE JOINT DETAIL