A new 88,000sqft development at 247 Tottenham Court Road is being developed on behalf of M&G Real Estate working with Stiff & Trevillion Architects. The redevelopment project will provide 11,500sqft flexible retail space at ground level for local businesses, 65,000sqft of Garde A office accommodation on the upper floors and 8 new homes. Construction will be complete by the end of 2024 and is expected to achieve
the highest environmental standards, with a minimum target rating of BREEAM Outstanding and 5 Star Design for Performance NABERS rating.

Civic Engineers were appointed to PCE Ltd to provide structural design and detailing for the superstructure frame taking on the role of PCE’s in-house structural designers. The building comprises a 6-storey office-led mixed use scheme with Kier as the main contractor. Revit modelling, and detailing, has been conducted in-house by PCE Ltd.

The superstructure frame has been designed as a hybrid steel and precast concrete frame, comprising precast twin-walls, columns (connected via piekko column shoes), hollowcore slabs, lintels and piekko deltabeams that utilise 90% recycled steelwork. We are responsible for the design and detailing (including RC intent) of all precast concrete elements as well as conducting the necessary stability assessments prior to sign off and approval by the Clients Structural Engineer. As part of the main frame design works, we provided specialist input into proposed design changes and alterations as well as providing the design and detailing for a number of in-situ elements.

As part of the precast superstructure, we provided the design and detailing for a steel framed plant enclosure at roof level supported of both steel deltabeams and concrete core walls constructed from precast Twin-wall panels. Including post-fix connections in additional to a select number of steel-steel connections.

We are also acting as the main frames temporary works engineer. This has involved conducting the temporary works design and detailing of props supporting twin wall panels, steel brackets, panel lifters, temporary concrete bases, and opening covers.

The small and confined nature of the site provided significant challenges in terms of buildability, site logistics and structural interfaces with adjacent buildings; We worked closely together with PCE and the
wider design team to overcome significant logistical and design challenges.