Precast Concrete Manholes
Gainey’s Concrete provides high-quality precast concrete manholes designed for use in sanitary sewer and storm drain systems. Our manholes are built for durability and reliability, serving as essential maintenance access points, observation points, junctions for multiple pipes, and accommodating changes in pipe size or direction. As a trusted precast concrete manhole manufacturer, Gainey’s ensures each product meets industry standards for performance and longevity.
MANHOLE Sizes
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48" Base and Riser
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60" Base and Riser
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72" Base and Riser
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96" Base and Riser
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120" Base and Riser
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144" Base and Riser
accessories and information
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Regular (non-extended) base or extended base sections are available
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Riser sections in 2' - 5'
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Eccentric cones in 1'8", 2’, and 3’ sections
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Concentric cones in 2' and 3' sections
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Grade Rings in 4” and 6” Sections or as Required
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Flexible rubber connectors are available in most sizes to accommodate pipe penetrations
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Interior/Exterior Coating
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Manhole Steps
stock manhole options
Ready whenever you are -Order today!
Add a Top:
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8" Flat Top
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1' 8" Cone (Eccentric)
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2' Cone (Eccentric and Concentric)
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3' Cone (Eccentric and Concentric)
Need to Know Info
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Meets ASTM C478 Requirments
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Holes can be cored as needed
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1 Roll Conseal Sealant between joints
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Add an invert!
resources
manhole invert systems
Manhole invert channels
Watertight manhole joints
manhole installation guide
grout guide
manhole sizing recommendations
