MANHOLES
Manholes - Manhole Risers
Adjust manhole height to suit the finished ground level with Greaney Concrete’s precast concrete manhole risers. Available in several chamber diameters and heights, they help build a manhole to the required depth.
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Manholes - Manhole Risers
Product Overview
Build to the required manhole height
Manhole risers are stacked as part of a manhole assembly to achieve the required chamber height. Choosing the right diameter and riser height helps the assembly suit the manhole design and meet the finished surface level.
Greaney Concrete lists risers for 900 mm, 1050 mm, 1200 mm and 1500 mm chamber diameters. Heights vary by diameter, with options shown in the sizing table. Use the technical information to identify combinations that match your project.
TECHNICAL RESOURCES
Manhole – Manhole Risers Technical Information
Use the technical information to review the available chamber diameters, riser heights and drawing details as you plan your manhole assembly. Contact our team if you need help confirming product details or suitability.
Product Specifications
- Product: Manhole Risers
- Material: Precast concrete
- Chamber diameters: 900 mm, 1050 mm, 1200 mm and 1500 mm
- Available heights: 250 mm, 500 mm, 750 mm and 1000 mm, depending on chamber diameter
- Technical resource: Manhole riser sizing table and drawing specifications
Product dimensions and weights are indicative.
Options
Manhole Risers 250mm (900mm Internal Diameter)
Manhole Risers 500mm (900mm Internal Diameter)
Manhole Risers 750mm (900mm Internal Diameter)
Manhole Risers 1000mm (900mm Internal Diameter)
Manhole Risers 250mm (1050mm Internal Diameter)
Manhole Risers 500mm (1050mm Internal Diameter)
Manhole Risers 750mm (1050mm Internal Diameter)
Manhole Risers 1000mm (1050mm Internal Diameter)
Manhole Risers 250mm (1200mm Internal Diameter)
Manhole Risers 500mm (1200mm Internal Diameter)
Manhole Risers 750mm (1200mm Internal Diameter)
Manhole Risers 1000mm (1200mm Internal Diameter)
Manhole Risers 500mm (1500mm Internal Diameter)
Manhole Risers 750mm (1500mm Internal Diameter)
Manhole Risers 1000mm (1500mm Internal Diameter)
Key Features
- Precast concrete construction for manhole systems.
- Multiple chamber diameters to suit different manhole assemblies.
- Riser height options to help achieve the required overall chamber height.
- Sizing table and drawings to support product selection.
- Designed to work with the corresponding manhole rings and components.
Typical Applications
- Residential developments.
- Commercial construction projects.
- Civil engineering and infrastructure works.
- Utility and drainage systems.
- Manhole assemblies that need to reach a specific depth or finished surface level.
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Frequently Asked Questions
A manhole riser is a precast concrete section used to build the height of a manhole chamber.
Greaney Concrete lists risers for 900 mm, 1050 mm, 1200 mm and 1500 mm chamber diameters.
The sizing table lists 250 mm, 500 mm, 750 mm and 1000 mm heights, depending on the chamber diameter.
Match the riser diameter to the manhole chamber, then use the sizing table to select a suitable height combination for the required depth.
Risers form part of a manhole assembly, and the sizing table lists available heights by diameter. Check the project design and technical information to confirm the required combination.
The product information includes links to the manhole riser sizing table and drawing specifications. You can also contact Greaney Concrete with questions about the options.
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