The Fitzrovia
A new mixed-use development in the centre of London
Location
Central London
Client
M&G Real Estate
Partner
Stiff & Trevillion / PDP
Sector
Heritage, Residential
Theme
Tall Buildings
Services Provided
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 provides 11,500sqft flexible retail space at ground level for local businesses, 65,000sqft of Grade A office accommodation on the upper floors and 8 new homes. Construction, to be completed by the end of 2024, is aiming for a minimum target rating of BREEAM Outstanding and 5 Star Design for Performance NABERS rating.
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. To further reduce the embodied carbon of the structural frame, we have replaced the traditional mesh reinforcement in the upper floor slabs with basalt fibre reinforcement, which consumes up to 62% less CO2e than steel during its manufacture.
We were 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 Client's 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.
Working closely with the frame contractor, PCE, we are acting as the main frame temporary works engineer — involving conducting the temporary works design and detailing of propping supporting twin wall panels, steel brackets, panel lifters and temporary concrete bases to ensure a safe and efficient erection sequence to maintain a rapid construction programme. The small and confined nature of the site provided significant challenges in terms of buildability, site logistics and structural interfaces with adjacent buildings, therefore the MMC frame solution was key in overcoming significant logistical and design challenges.
Life at Civic