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Case Study: 78m long open excavation

Case Study: 78m long open excavation

To supply low-carbon heat to buildings across Bristol, CP Groundworks were tasked with installing a district heating main directly through Temple Meads.

MGF’s involvement on the district heating main came through CP Groundworks who introduced MGF to Eurovia.

MGF Technical Sales Representative, Dexter Dolman attended an initial meeting and delivered a presentation on MGF’s capabilities, products and services to Jon Clarke, CP Groundworks’ Director. After Jon’s introduction of Dexter to Will Orr, Project Manager at Eurovia, MGF’s Regional Engineer, Richard Lawrenson, joined Dexter for a further presentation on our engineering capability.

A completely open, 78m long excavation was required for installers to connect and weld the DHM pre-made pipe, with plotted bell hole positions to allow access to join sections together. In order to avoid historical features, the excavation had to follow a critical path – bypassing the port wall, Temple Meads train station and many live service lines.

MGF’s design utilised a varied bracing system to coincide with planned service crossings during the excavation. We provided Manhole, 152UC and 203UC Braces to meet the requirements of maximum space and accommodate the install of 12m sections of pipe.

The works involved a network of underground pipes – connected to a number of energy centres, including biomass boilers and gas combined heat and power (CHP) plants.

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