Manhole Cone - 24" Concentric Opening - D4858 - 24"H with Step Holes

SKU:
100001647

Jensen concrete concentric cone for sanitary sewer, storm drain, and manhole barrel-to-grade transition applications.

  • Type: Concentric cone
  • Barrel diameter: 48"
  • Opening diameter: 24"
  • Height: 24"
  • Compliance: ASTM C478

Contact your Jensen representative for sizing and configuration details.

Delivery available to:
  • Northern California
  • Northern Nevada

Product availability varies by location. If you need a product immediately, contact us to ensure availability.

If you need modifications to a standard product or a complete custom solution, we will work to accommodate your request in a timely manner. Please provide us with a few details about your project. Contact us now.

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Features & Benefits

Jensen concrete concentric cone transitions a manhole barrel down to grade-level access. Designed for sanitary sewer and storm drain manholes, it provides a structural taper to the access opening while supporting durable underground access infrastructure.

Features

  • Concentric taper transitions barrel to access opening
  • Reinforced concrete for load-bearing strength
  • Precast for consistent quality
  • Gasketed joints for watertight performance

Applications

  • Sanitary sewer manholes
  • Storm drain access structures
  • Barrel-to-grade transitions

Technical Specifications

Weight: 1500.21 lb
Product Type: Manhole Cone
Access Point Diameter: 24 in.
Cone Type: Concentric
Design Specification: ASTM C478
Load Specification: A-16 (AASHTO HS20-44)
Material: Precast Concrete
Bury Depth: 0.0' - 2.0'
Height: 24 in.
Water Level (ft.): 0.0'
Inside Diameter: 48 in.
Outside Diameter: 58 in.
Series: D4858
Delivery to: Northern California, Northern Nevada

Product availability varies by location. If you need a product immediately, contact us to ensure availability.

If you need modifications to a standard product or a complete custom solution, we will work to accommodate your request in a timely manner. Please provide us with a few details about your project. Contact us now.

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