Giants Causeway, Visitors Centre

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ACS was responsible for the provision of a 3D Building Information Model (BIM) for the Giants Causeway Visitors Centre.  Prior to construction and during the design phase, the services of ACS were engaged directly by the main contractor Gilbert Ash, to create a 3D BIM model from the Architects and Engineers 2D drawings.  ACS used Autodesk’s Revit Architecture and Tekla Structures to create the 3D model.

 

The building shape itself was extremely complex incorporating non-orthogonal design lines and shapes. The geometry of the cast-in-situ RC roof structure contained a large quantity of varying slopes, angles and fold lines onto which was placed the grass roof finish, restoring the natural ridgeline of the surrounding landscape.

 

The RC roof slab, cast on site, is designed to have an underside of polished concrete as an internal ceiling finish to provide a special architectural feature.  This incorporates an intricate pattern formed by the recessed joint lines of the shuttering panels, modelled into the slopes and fold lines of the core roof slab.  Each individual shuttering panel specification was generated directly from the Revit Model, an almost insurmountable task without the model.  All the electrical services cabling and lighting is carried through ducting that is pre-cast into the roof structure.

 

ACS was also responsible for the Structural Steel Modelling and Detailing, which was then imported into the architectural Master Model in REVIT for final checking.  Where accurate sections were generated through the building for the design and construction teams together with 3D visual images for clarity of explanation.  Sub-contractors were able to take accurate information from the BIM model as the basis on which to develop their specific drawings and details, which once approved were imported back into the Master BIM model keeping it up to date and the centre for all disciplines to extract information from.

 

There were a number of design clashes between the various construction elements, largely because of the complex and unique nature of the build.  When the Mechanical Services Model was incorporated into the Master BIM model there were major clashes highlighted which were rectified before going to site.  Through intensive checking and resolution, the possible time loss and potentially expensive cost impact of design changes during construction was minimized.

 

ACS modelled this complex building within a very tight time schedule and throughout the process identified over 100 design conflicts between the various design disciplines during the pre-construction design phase.

 

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SCOPE OF WORK:
3D BIM Modelling; Structural Steel Modelling and Detailing

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