Precast concrete manholes are used in sanitary sewer and storm drain systems for  maintenance access, observation points, changes in pipe size or direction, and junctions for multiple pipes.


EBR QPL:  Gainey’s is an approved manufacturer of Precast Manholes for EBR Parish.



CONCRETE: Class 1 concrete with design strength of 4500 PSI at 28 days
REINFORCEMENT: Conforms to ASTM C478 – “Standard Specification for Precast Reinforced Concrete Manhole Sections”
CASTING: Cast iron manhole ring and cover shall be nominal 24 inch and shall be traffic duty.



  • Straight Base or Extended Base  Sections
  • Riser Sections in 1’, 2’, 3’, and 4’ Sections
  • Eccentric Cones in 2’ and 3’ Sections
  • Grade Rings in 4” and 6” Sections or as Required
  • Flexible rubber connectors available in most sizes to accommodate pipe penetration
  • Interior/Exterior Coating and Steps

Standard Drawings Available

48″ Extended Base PDF
60″ Air Release PDF
EBR 48″ Standard PDF
48″ New Orleans Style with Brick Grade Rings PDF


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