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Case Study – Drax Power Station

Project: Ecostore Rail Unload Building

Customer: Volker Ground Engineering

Animation of inside a large excavation supported with red MGF hydraulic braces and sheet piles

MGF provided excavation support for the Ecostore Rail Unload Building as part of the £200m biomass project at Drax Power Station in Selby.

MGF were first contacted by Volker Ground Engineering (VGE) to provide budget costs for the design and supply of 3 levels of modular propping for the 18m deep basement in the Rail Unload Building. A cost comparison was conducted by VGE and a welded steel frame was initially thought to be cheaper.

MGF were able to demonstrate that the modular frame offered a significantly shorter lead time (2 weeks) and offered significant time savings (6+ weeks) in the installation and extraction process. MGF identified that the Groundworker would not be able to continue to excavate until the steel frame had been installed in its entirety. So using a faster to install modular frame offered considerable time savings reducing install works from over 3 weeks to just 5 days.

Due to delays in the existing programme and tight deadlines, the modular option was more favourable as the time and expense saved in programme significantly outweighed the additional cost.

The modular frame design was modelled in Autodesk REVIT, software specifically built for Building Information Modelling (BIM), enabling MGF to demonstrate all aspects of the scheme to Volker Ground Engineering and the Project Team at the pre-construction stage.

The use of REVIT was particularly useful as the design was technically demanding. The software allowed MGF to demonstrate to all stakeholders that the design brief had been fully satisfied. Working collaboratively with Volker Ground Engineering, the permanent works engineers RPS, category III temporary works checker Saldanha Design and Management, steel fabricators William Hare and principal contractor Shepherd Construction, MGF provided design services, installation guidance, supply of equipment and aftercare.

View our video case study which demonstrates the benefits of 3D visualisation to reduce cost and installation time.

Read the full technical case study here – DRAX Case Study A3 4pp Reduced.pdf

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