top of page

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. 

Sewer Manhole.webp

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

Protection Op1.webp

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.

bottom of page