Storm Drain Manholes
Our Storm drain manholes are produced per ASTM C-478 specifications.
Storm Drain Manhole Sizes
We produce storm drain manholes in 36" Diameter to 84" Diameter.
Joints
Our manholes are manufactured with machined tongue and groove joints, and
are sealed with butyl rubber sealant which meet ASTM C-990.
Steps
Steel reinforced Copolymer Polypropylene steps meeting ASTM C-478,
ASTM D-4101, ASTM A-615 and AASHTO M-199 are typically installed in our
storm drain manholes. Various types of steps may be ordered to fit the
requirements for specific applications.
Pipe Openings
- Majority of storm drain manholes are provided with formed openings 4" to 8" diameter larger than the outside diameter of the pipe.
- Flexible Pipe to Manhole Connectors meet ASTM C-923 specifications and are available in various sizes to be installed in our storm drain manholes.
- Water Stop Grouting Rings Meet ASTM C-923 Specifications, Section 4 "Materials and Manufacture" and are available for field installation by others.
Coatings
Various coatings are applied at our facility to meet the specifications of the
specific job.
Fames and Covers
Both foreign and domestic castings are available for storm drain manholes.
Storm Drain Shop Drawings
36" Dia. Non Extended Base