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Precast concrete manholes are an integral component of any modern sewer system. A properly designed and installed precast concrete manhole system provides superior watertight performance compared with competing methods and materials. A typical precast concrete manhole can be installed 500 feet deep and more, because lateral forces act equally around the periphery, which places the section in pure compression – the ideal state for concrete. Precast concrete manhole sections are produced in a controlled environment, thus exhibiting high quality and uniformity.

RESOURCES

Manhole Specifications
Manhole Brochure
Manhole Technical Design Presentation
Manhole Installation Guide
Manhole Vacuum Testing Procedures
Manhole Vacuum Test Warning 
Sampling of Manhole Inlets - Technical Drawing
Manhole Eco-LEED Attributes

CASE STUDIES

Precast Manholes in Stormwater Application