• Changes in direction of pipe
• Changes in pipe shape
• Changes in pipe size
• Custom openings
• Custom tops
• Flexible watertight pipe-to-manhole connections
• Junctions for multiple pipes Precast circular vertical structures can be used for the following: Stormwater management or best-management-practice structures
• Observation points
• Overflow structures for ponds Precast circular manholes and vertical structures can be provided with the following features: Precast invert channels
• Precast Manholes can be used for the following: Access to the system for maintenance
• Protective linings

• AASHTO M198 — Joints for Circular Concrete Sewer and Culvert Pipe Using Flexible Watertight Gaskets
• ASTM C1244 — Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test
• ASTM C443 — Joints for Circular Concrete Sewer and Culvert Pipe Using Rubber Gaskets
• ASTM C478 / AASHTO M199 — Precast Reinforced Concrete Manhole Sections
• ASTM C923 — Resilient Connectors Between Reinforced Concrete Manhole Structures and Pipes

• Confined o-ring rubber gasket
• Preformed mastic or butyl gasket
• Single offset with profile rubber gasket

• Bar Nunn, WY
• Billings, MT
• Como, MS
• Deland, FL
• Des Moines, IA
• Elk River, MN
• Florin Road, CA
• Grand Junction, CO
• Grand Prairie, TX
• Green Cove Springs, FL
• Hawley, MN
• Helena, MT
• Henderson, CO
• Houston, TX
• Independence, MO
• Indianapolis, IN
• Lawrence, KS
• Marianna, FL
• Marshalltown, IA
• Menoken, ND
• Mitchell, SD
• Prentiss, MS
• Rapid City, SD
• Stacy, MN
• Waco, TX
• Whitestown, IN

For more information and product availability, please contact your local sales representative.