Precast 4-ft (48-in) diameter manholes are commonly used for both sanitary and stormwater access points. They accommodate sharp turns, integration of various pipes, pipe sizes, and elevation changes.

These manholes are strong enough for traffic applications, including in roadways, parking lots, and pedestrian paths. Custom and standard sizes are available. Depending on the application and project needs, these manholes are customizable with a variety of features.

Oldcastle Infrastructure’s manholes are versatile in the construction of buried structures. Manholes are often utilized at vault openings or pipe junctions to provide maintenance and inspection access to underground piping systems, meters, and facilities.

Manholes are used for connecting two or more converging storm or sanitary sewers, permitting pipe size changes, accommodating abrupt changes in alignment or grade and allowing for direct surface flow interception.

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Shea produces a variety of manholes and catch basins in different sizes specifically for use with wastewater management systems. Precast concrete manholes from Shea will last under the toughest conditions, and are useful for accessing and maintaining a sewage system.

Jun 4, 2024 · Steel Reinforcement Conforms to Latest ASTM Specification: ASTM A-615, Grade 60 Black Deformed Bars ASTM A-185 Welded Wire Fabric 0.12 Sq. In./Lineal Ft. And 0.12 Sq. In.(Both Ways) Base Bottom

Precast concrete manholes are barrel and cone shaped chambers used for wastewater management and access management. Our manhole products are part of sanitary sewers, stormwater drains, infiltration galleries, deflection systems, and distribution points.

Concrete manholes by Shea Concrete Products are designed and manufactured to provide simple access points to either residential or commercial septic tanks. Our precast concrete manholes are available in either round or square shapes with varying dimensions.

Typical Sanitary Sewer Manhole MANHOLE SIZE: 1. NOTES: DIAMETER IS 4 FEET: FOR SEWERS UNDER 12 DIAMETER. B. DIAMETER IS 5 FEET: FOR SEWERS 12 THROUGH 24, OR WHEN 3 OR MORE PIPES INTERSECT THE MANHOLE. A. PRECAST REINFORCED CONCRETE MANHOLE SECTIONS SHALL CONFORM TO ASTM C 478. JOINTS SHALL BE RUBBER GASKET, OR SEALED WITH APPROVED SEALANT. 2. CO...