- CPM Drainage
- CPM Rail
- CPM Special Precast
- CPM Environmental
- Stormwater Attenuation
- Stormwater control
- Stormwater treatment
- Domestic Rainwater Harvesting system
- Commercial Rainwater Harvesting system
- Domestic/Commercial Grey-water recycling system
- Sewer Cleansing
- Combined Sewer Overflows
- Pumping chambers
The Perfect Manhole
- bespoke manhole system
- monolithic base unit
- no requirement for concrete surround
- watertight
- fast installation
- perfect hydraulics
- safer construction
- minimum 120 year design life
The System
Manhole design and construction has remained unchanged for many years.
Specifiers, designers and contractors now have to consider various elements including build quality, speed of construction, health and safety issues and water tightness.
After an extensive research programme CPM introduce the Perfect Manhole System, to meet the challenges of modern day construction. This CPM off-site solution comprises of a monolithic precast concrete manhole base available pre-benched in any configuration within just days of requisition, and in addition, sealed chamber rings with a thicker wall, rubber joint and sealed cover slab.
This unique system of products combine to form the Perfect Manhole designed and manufactured to last a minimum of 120 years that does not need a concrete surround unless specifically required.
We are a market leading manufacturer of concrete drainage products with extensive production facilities in Somerset, Staffordshire, Yorkshire and Scotland. This, combined with a network of specialist distributors, enables us to provide our customers with complete UK coverage. We supply a vast range of sustainable precast products to every sector of the construction industry, fully supported by our experienced technical and engineering teams.
Advantages of the Perfect Manhole System
- Safer construction - No requirement to work in confined spaces. No requirement to form a concrete surround. Reduction of open excavation.
- Fast installation - The modular solution eliminates the need for wet trades resulting in rapid construction compared to conventional methods.
- No need to surround in concrete unless specifically required - 130mm wall thickness.
- Available at short notice - Our modern methods of production enables just in time delivery of all components including monolithic bases at short notice.
- Design freedom - All designed monolithic Perfect Base characteristics such as location of the inlets and outlets and invert configuration can be manufactured individually and exactly in accordance to the wishes of the specifier and client.
- Perfect Hydraulics - everything flows. Optimised flow characteristics by customised base configuration of all inlets and precise drop in channels and pipe connections.
- Watertight - The combination of a thicker wall and rubber joints ensures a watertight structure.
- No water ingress into sewerage network reduces treatment costs - The combination of a 130mm wall and sealed rubber joint is guaranteed to withstand a minimum of 5m / head pressure.
- Combined seal includes load distributor - Load distribution ensures even distribution of vertical loads.
- Allows joint inspection - Correct installation can be visually confirmed.
- Fully tested under factory conditions - The whole system from base to cover slab is subject to testing.
- Kitemarked solution manufactured under factory conditions - Complies with the requirements of BSEN 1917 and BS5911-3.
- Concrete for Life - Built to last. High quality durable concrete with a minimum 120 year design life.
- Full take-off service available.
- Lifting apparatus available for fast, effective and safe handling.
- Full installation guide available.
