Client
Ardstone Capital
Role
Structural Engineers
Key info

Sentinel Building, Glasgow

Our Glasgow team are appointed as Structural Engineers on this extension and refurbishment project in Glasgow’s International Financial Services District (IFSD).

The development involved the assessment of the existing structural frame in relation to various options for vertical extensions in combination with major alterations to the configuration of the lift and stair core. One of the key challenges in this project is to develop proposal options that can be constructed incrementally, as the building has a number of tenants under lease in various floors who will continue to operate during the works.

A new panoramic steel framed extension to the roof was designed as an option, and the core lift shafts were reconfigured and extended to accommodate the additional floor plate and improve the vertical transportation logistics. Strengthening works are required to the existing structural columns to accommodate the extra load of this extension.

The existing steel frame was modelled in Revit by our team. Our model was used as the base model by the design team throughout the design development and detailed design. Finalised alteration options include strengthening of columns on non-occupied floors in anticipation for an extension at some point in the future, new high speed lifts and an increased reception area with a bespoke floating feature window seat.

In order to accommodate the new high speed lifts works to form a new lift core involve creating two 1m deep recesses within the existing pile cap as the new lifts require a greater pit depth than is currently provided. The lift core currently provides stability for the building in conjunction with vertical bracing and moment frames. The altered pile cap will be tied in both directions to adjacent pile caps to maintain stability prior to the works being carried out.

The reception area work consists of moving the curtain walling to increase the floor area and to create a floating concrete window seat on one elevation. The existing concrete steps will be removed on this elevation and a new support structure will be designed to carry the pavement and provide support for the window seat structure which cantilevers over the pavement.

Full SER certification of structural works is being provided for this project.

Sentinel Building, Glasgow

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