Jefferson Concrete produces manholes with 48", 60", 72" and 96" inside diameter which conform to ASTM C478 to meet your storm and sanitary needs.
They can be manufactured to include custom openings or flexible pipe-to-manhole connectors and can also be used for pump stations, wet wells, grit chambers, oil/water separators, and storm water management structures. Various openings are available in the top slabs to accommodate castings or access hatches.
Drawings
- 48" Diameter Manhole Standard Sheet
- 48" Diameter Benched Manhole Non-Extended Base
- 60" Diameter Manhole Standard Sheet
- 72" Diameter Manhole Standard Sheet
- 96" Diameter Manhole Standard Sheet
Accessories
- Blackhawk Bituminous Asphault Coating
- Boots - Hamilton Kent
- Boots - Kor-N-Seal
- ConSeal Buytl Sealant
- Corrugated Pipe Adapter for Boots
- Grade Rings - 24" Diameter Round
- Grade Rings - 30" Diameter Round
- Grade Rings - 24" x 24" Square
Stock Castings
- 1007 with Grease Cover
- 1007 with Plain Cover
- 1007 with Sanitary Cover
- 1007 with Storm Cover
- 1007 with Water Cover
- 1016AC with Plain Cover
- 1016AC with Sanitary Cover
- 1016AC with Storm Cover
- 1016D with Plain Cover
- 1016D with Sanitary Cover
- 1032 with Plain Cover
- 1032 with Sanitary Cover
- 1032 with Storm Cover
- 1032 with Water Cover