engineering.
Oops! Looks like your browser is out of date. Is this page displaying correctly? If not, try upgrading your browser or use a different one.

240 Blackfriars.

AHMM designed a complex trapezoid-shaped building in order to turn an awkward site to the client’s advantage. Aesthetically, this mixed-use site just to the south of Blackfriars Bridge suits its central location and provides the surrounding area with a striking new focal point.

TRAPEZOIDAL SHAPED MIXED-USE DEVELOPMENT ON A VERY CONSTRAINED SITE

Location
London, UK
Client
Great Portland Estates
Architect
Allford Hall Monaghan Morris
Project Value
£ 80 million
Floor Area
21,275 m²
Status
Completed 2014
Expertise
Structures

The concept of the internal design was simple, incorporating office and residential units with retail spanning across the lower floors. There is also an adjoining structure containing ten residential apartments. The tower’s unusual shape, in combination with height restrictions governed by planning and civil constraints, raised a number of complex issues for our team to solve.

Above ground, the off-centre, asymmetrical design of the building caused various complications. An eccentric core introduced torsion and a potential lean towards the west; sophisticated analysis was used to predict the movement of the core and we proposed to orientate the core in the opposite direction in order to balance the forces.

Due to its height, concrete was chosen as the most appropriate material for the frame. Visual concrete is particularly important, especially the double-height ground floor columns constructed through a testbed process. Since the structure widens above the base, we designed a second floor transfer slab reinforced with steel elements and post-tensioned tendons to direct horizontal loads back to the core.

A triple-height glazed space below the roof provide spectacular views of the Thames; this was created by two triangular steel frames that required minimal columns, and a large truss at the roof’s edge.

Awards.

2015 NLA Award – Winner of Office Interior Design

Dubai
Creek
Footbridge.
 
The
Red Sea
 
Project.
Oxford
North
 
 
1–4 Marble
Arch.
 
 
Athletes'
 
Village.
 
Arding
&
Hobbs.
 
Grosvenor
Square.
 
 
Horizon
 
Building.
 
Canada Water
 
Plot K1.
 
Cadogan
Place.
 
 
CASPAR
I.
 
 
Kivik
 
Pavilion.
 
One
Centaur
Street.
 
Nike
myThread
 
Pavilion.
Museum of the
 
History of
Science.
2-12
Symons
 
Street.
Southwark
 
Gateway.
 
Brindleyplace
Café.
 
 
Queen Mary
 
Students'
Union.
30
Kensington
 
Church Street.
Burlington
Danes
Imaging Centre.
 
Bedford
Music
 
School.
Royal Holloway
 
Student
Residences.
Howe Dell
 
Primary School.
 
39-49
Wigmore
 
Street.
1
Finsbury
 
Square.
London Bridge
 
Glass
Sculpture.
Hilton London
 
Tower
Bridge.
Bishop Challoner
Catholic Collegiate
School.
 
Butterfield
 
Innovation
Centre.