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Sanitary Structures

Sanitary sewers are used for the conveyance of sanitary sewerage intersections and clean-out points. Design Precast & Pipe, Inc. offers a full line of sanitary sewer components ranging from small diameter manholes to large diameter round and square lift stations.​

We also offer precast concrete inverts or flow channels to eliminate the need to precast these in the field. 

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Sewer Manholes

  • No lifting holes in any sanitary sewer structure

  • Any size round manholes up to 120" diameter

  • Single offset gasket joint or Butyl Mastic joints


ASTM C-478 - Standard specification for Precast Reinforced Concrete Box Sections for Culverts, Storm Drains, and Sewers​

AASHTOM M-199 - Standard specification for Precast Reinforced Concrete Manhole Sections

ACI Standard 318 - Building Code Requirements for Structural Concrete

Wet Wells

  • Many different types—can meet each state/local requirement

  • Square and round available

  • Allows ability to set well in one day

  • Reduces having scaffolding and forms to pour in field

  • Reduces the amount of sheet piles and excavations necessary



  • New equipment provides DPPI the ability to pour a perfectly formed invert/flow channel at the plant 

  • Reduces time spent in field

  • Structure ships complete with invert and boots—all the contractor does is set it in place!

Protection Options

  • Coating with specified material 

  • Waterproofing admixtures

  • Anti-microbial admixtures

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Let's Talk


All quality projects begin with a conversation. Whether you’re facing a challenge with design, timeline, or budget—we look forward to discussing it.

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