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Precast Manholes and Wet Wells |
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Uses
Precast Circular Manholes are used in sanitary sewer and storm drain systems for access, observation and junctions.
Precast Circular Vertical Structures are used for pump stations, wet wells, stormwater management structures and impoundment overflow structures. |
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Sizes
Precast Circular Manholes and Vertical Structures are normally available in diameters of 48 inches (1200mm) through 120 inches (3600mm). |
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Application
Precast circular manholes can be used for the following:
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Access to the system for maintenance
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Observation points
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Changes in pipe size
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Changes in pipe shape
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Changes in direction of pipe |
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Junctions for multiple pipes |
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Precast Circular Vertical Structures can be used for the following:
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Wet wells
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Sanitary or stormwater pump stations
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Overflow structures for ponds
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Precast Circular Manholes and Vertical Structures can be provided with the following features:
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Protective linings |
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Flexible pipe-to-manhole connections |
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Custom openings |
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Custom tops |
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Joints
The following joints are normally available for Circular Manholes and Vertical Structures:
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Single-offset with profile rubber gasket
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Confined O-ring rubber gasket
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Preformed mastic or butyl gasket
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Applicable Specifications
The following specifications apply to precast circular manholes and vertical structures:
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ASTM C478/AASHTO M199 — Precast Reinforced Concrete Manhole Sections |
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ASTM C443/AASHTO M198 — Joints for Circular Concrete Sewer and Culvert Pipe Using Rubber Gaskets |
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CSA Standards CAN/CSA A257.4 Precast Reinforced Circular Concrete Manhole Sections, Catch Basins and Fittings |
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