Product Information

Sealed Manholes- The Perfect System

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After an extensive research programme, CPM introduced the 1200 Perfect Manhole system in October 2009 to meet the challenges of modern day construction. Today, it is available in 1200mm, 1500mm and 1800mm diametres and comprises of a monolithic precast concrete base (available pre-benched in any configuration within just days of requisition), a sealed chamber ring (with a thicker wall than a standard ring), a rubber joint (so no tokstrip of similar product is required) and a sealed cover slab which is supplied with your required access.

This unique system of products combines to form the CPM Perfect Manhole system; designed and manufactured to last a minimum of 120 years that provides a sealed manhole system that gives up to 40% savings on green house gases compared to traditional manhole construction and eliminates the need of ready mixed concrete to form the traditional base, chamber benching and further concrete to surround the manhole. A complete manhole can be installed in as little as 30 minutes, making safe site practice a real winner when using the Perfect Manhole as it reduces the need to work in confined spaces and eliminates the need for wet trades resulting in rapid construction compared to traditional methods as well as a reduction in the time the excavation is open.

The Perfect Manhole complies with BSEN 1917:2002 and BS5911-3 and has been accepted for use by all major UK companies.

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About us

Marshalls CPM are UK leading manufacturers and suppliers of precast concrete products for Security, Housing, Rail, Roads/ Highways & Water applications. Marshalls CPM have built a solid reputation for our high quality products and dedicated customer service. We have formed close working relationships with customers and suppliers including major contractors, water companies and national merchant distributors.

Drainage
Marshalls CPM supply, manufacture and design precast concrete drainage products. We offer precast concrete products in BIM (Building Information Modelling) as required by all government construction projects. In addition to BIM, we also offer design services for special applications which include AutoCAD drawings. All CPM products comply with current National and European standards.
Products include Concrete Pipes, Traditional Manholes, Sealed Manholes, Caissons, House Inspection Chamber, Gully Pots/Covers, and Box Culverts

Retaining Walls
CPM’s BBA approved Redi-Rock™ modular wall system is aesthetically pleasing, strong, space saving, can be matched to suit different environments, cost effective and requires very little maintenance.
Products include Retaining Wall Series, Freestanding Wall Series, Reinforced Walls, Vehicle Security Barriers, Landscaping & Flood Protection

Off Site Solutions
CPM’s off site solutions are designed to provide skilled labour with minimal costs and increased health & safety benefits.

Water Management
Marshalls CPM have created a range of solutions for water management including harvesting, storage, flow control and treatment. We are also committed to offering products for stormwater management, flood protection, wastewater management and flood prevention.
Products include Ground Heat Exchangers, Flood Protection, Wastewater Management, Rainwater Management & Stormwater Management.

Rail Products
Marshalls CPM are manufacturers of precast concrete signal bases, modular retaining walls, bridge components, bank revetments, bomac level crossing beams and precast concrete bespoke products.
Products include Bomac Beams & Redi-Rock for Rail.

Specialist Precast
Marshalls CPM are experts in the design and manufacture of high quality structural and non-structural elements.
Products include special cover slabs, bespoke precast, precast concrete bollards, precast concrete landfill shaft sections and bespoke flat pack chamber systems.

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Company details for Marshalls CPM

Marshalls CPM