HMP Ranby

Terrapin’s modular building expertise has provided a new cellblock for a North Nottinghamshire prison in a fraction of the time it would have taken using traditional construction methods. Terrapin’s Prospex custodial modular system was specified for a two-storey extension at HMP Ranby, a category C male adult training prison in Retford. 30 accommodation modules, creating 60 single cells, were manufactured and fitted out in factory-controlled conditions at Terrapin’s production facility in Milton Keynes. The completed modules were delivered to site over 10 working days. Using Terrapin’s off site construction technology accelerated the building programme and reduced works and labour on site - a particular benefit in high security areas, where time needed for security screening can reduce the available working time each day.

The new cellblock at HMP Ranby was manufactured using Terrapin’s Prospex double occupancy cell modules, fitted out to an exacting HM Prison Service specification ensuring safe and secure accommodation for occupants. The steel-framed modules feature a double wall construction to enhance thermal efficiency and provide acoustic insulation between individual living spaces. Terrapin’s Sales Director, Richard Macdonald, points out that off site prefabrication for extending or refurbishing custodial centres is even more time-efficient than on most other projects. He says, “At Ranby, all plant and labour in secure areas has to be security checked in and out every day, which is time consuming and could extend the build schedule. By pre-engineering much of the building and services work off site, we made a massive reduction to the time spent in security checks on site.

Tim Laycock, Senior Project Manager based at EC Harris’ Leeds office commented, “Project managing the houseblock construction, whilst operating in a live prison environment, presented a number of challenges. By developing strong relationships with key project stakeholders we successfully delivered this tight build programme on time and within budget. Terrapin has extensive experience in providing efficient solutions for this specialist sector and their involvement from an early stage played a key role in the successful completion of the project.

HMP Ranby

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