• SANITARY MANHOLES
• DRAINAGE MANHOLES
• ELECTRICAL MANHOLES
• MANHOLE COATINGS
• RISERS
• ADJUSTMENT RINGS

Precast concrete manhole structures from Design Precast & Pipe, Inc. are the right choice for the needs of today’s civil constructor. Our manhole structures are cast out of the best aggregate materials and finest steel available. Whether sanitary sewerage, drainage manholes, or specialized manholes for utility and electrical purposes, Design Precast & Pipe, Inc. is the preeminent supplier for your coated and non-coated manhole needs.

Size & Standards

Design Precast & Pipe produces Precast Manhole & Vertical Structures in 5 different diameter sizes, all with specific applications and accessory

All Manholes and Vertical Structures conform to:

• ASTM C478 - Precast Reinforced Concrete Manhole Sections
• ASTM C443 - Joints for Circular Concrete Sewer and Culvert Pipe Using Rubber Gaskets
• ASTM C923 - Resilient Connectors Between Reinforced Concrete Manhole Structures and Pipes
• ASTM C1244 - Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test
• State DOT Specifications

Use & Applications

Design Precast & Pipe circular manholes are used in Sanitary Sewer & Storm Sewer for many purposes including but not limited to:

• Access to the system for maintenance
• Observation points
• Changes in pipe size
• Changes in pipe shape
• Changes in direction of pipe Junctions for multiple pipes

Design Precast & Pipe Vertical Structures are used in Pump Station, Wet Wells, and Valve pits, but can be made to specification to be adapted for any project.

We are providing the industry with precast concrete manholes, risers and adjustment rings that are of the highest quality, constructed of superior materials by skilled craftsmen that take pride in their work. Comparing our structures with others is the only way to truly appreciate the effort that Design Precast & Pipe, Inc. takes in making the best built, best looking, and most functional manhole structures in the marketplace today.