Drainage Products

Manholes

Croom Concrete manufacture and produce precast concrete manholes, manhole rings and reinforced access covers. Precast Concrete OG pipes are also available in sizes 225mm up to 1500mm.

Benefits of Manholes

Precast concrete manholes are straightforward to assemble and easy to install, reducing the need for skilled labour.
Precast concrete manholes are rigid under loads.
All precast manholes are supplied with Steel coated steps, all which conform to EN 131010: 2002 Class C.
Concrete manholes have a design life in excess of 50 years.
By using Sealant a flexible water tight seal is created between each of the manhole sections.

Features

Precast concrete manhole rings are manufactured with diameter sizes of 900mm; 1200mm and 1500mm.
Heights available are 1m, .75m, .5m and .25m.
All units are manufactured in a wide range of depths, creating a modular system so that all type of manhole depths can be accommodated.

Manhole Steps

All Manhole steps are fitted during manufacturing, guaranteeing no sharp edges on steps, and removing the risk of injuries. They are bright orange coloured, making them visible in the dark shafts.

Proper Handling Facilities

All units are manufactured by Croom Concrete with two 25mm lifting holes.
Units should be stacked upright when being stored on site.

Declaration of Performance (DoP) Certs

CE DOP EN 1916 - Manholes

CE DOP EN 1917 - Manholes

Manhole / Gully Pot Risers

Croom Concrete Gulley Pot risers can be quickly and easily installed by semi-skilled labourer and there are fewer joints which reduce the likelihood of infiltration.

Features

Concrete seating rings are reinforced 65mm deep units which can be used in place of engineering bricks to adjust the ductile or cast iron covers and frames to the required level. Manhole seating rings are also often a much cheaper and more convenient choice.

Removes the need to lay bricks on site
Quick installation time and reduced labour cost
65mm thick
Sits on top of the manhole cover slab
Strength similar to Class B.Eng bricks
Gaps in brickwork causing a broken seal is no longer a problem
Quality product produced by vibration casting process

Benefits

They can be quickly and easily installed by semi-skilled labour and there are fewer joints which reduce the likelihood of infiltration. Our multi-part adjusting units offer the advantage of light weight sections enabling one man to handle the units.

Croom Concrete Seating Rings can be quickly and easily installed by semi-skilled labourer and there are fewer joints which reduce the likelihood of infiltration.

Croom Concrete manufacture and produce precast concrete manholes, manhole rings and reinforced access covers. Precast Concrete OG pipes are also available in sizes 225mm up to 1500mm.