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An eight-storey plus double basement building that was once the headquarters of media giant Bloomberg, City Gate House has been transformed into prime office space on Finsbury Square.
We carried out the soft strip, asbestos removal and structural alterations of the building, which sits directly opposite Finsbury Circus and is connected to adjacent buildings via a glazed link bridge and glazed staircase.
Demolition
Scope of Works
02
Our initial contract was for the soft strip, including the removal of the passenger lifts. Some elements remained, such as marble fascias, timber panelling and windows. The link bridge between 38 Finsbury Circus and City Gate House was also dismantled and the resulting void reconstructed using stonework to match the existing façade.
We undertook asbestos removal in conjunction with the soft strip operations. Individual external façade scaffolds were erected for the removal of external services for the installation of an external hoist which serviced the six floors and facilitated the safe dismantling of the link bridge.
Occupied Building
03
When works began, two floors remained occupied. Reducing our impact on the working office environment became one of the key challenges of the project. This required precise coordination and management of the mechanical and electrical contractor working alongside the soft strip crews. All works were carried out successfully without a single incident affecting the occupied floors.
A second challenge was the removal of the demolition arisings out of the building with only a single point of access and a small internal courtyard with a very tight radius on the access road, preventing large transport safe access into the courtyard. This was achieved by installing the external hoist, the use of multiple wheeled bins, adapting the roadway within the courtyard and using a strict traffic management system to ensure safe site entry and exit.
Structural Alterations
04
For structural alterations that had not yet received planning permission, we worked with the client to develop an advancement strategy. Once planning was granted, we were then in a position to progress the works as efficiently as possible. This involved the complete reconfiguration of one of the cores, the removal of two mansard floors whilst retaining the façade, the formation of several new risers, and steel adaptions throughout the building.
The core alteration involved a significant amount of temporary works. Where possible, we incorporated the permanent works to provide significant programme and cost savings to the client. A major part of this was to install two new permanent foundations, founded 3 m below the existing basement slab. Individual shafts had to be excavated between the existing structure for the new foundations to be formed. Both temporary and permanent steel work could then be installed from these foundations to allow demolition completion and provide as much advantage to the new construction as possible.
05
06
click to open
Occupied Building
03
When works began, two floors remained occupied. Reducing our impact on the working office environment became one of the key challenges of the project. This required precise coordination and management of the mechanical and electrical contractor working alongside the soft strip crews. All works were carried out successfully without a single incident affecting the occupied floors.
A second challenge was the removal of the demolition arisings out of the building with only a single point of access and a small internal courtyard with a very tight radius on the access road, preventing large transport safe access into the courtyard. This was achieved by installing the external hoist, the use of multiple wheeled bins, adapting the roadway within the courtyard and using a strict traffic management system to ensure safe site entry and exit.
Structural Alterations
04
For structural alterations that had not yet received planning permission, we worked with the client to develop an advancement strategy. Once planning was granted, we were then in a position to progress the works as efficiently as possible. This involved the complete reconfiguration of one of the cores, the removal of two mansard floors whilst retaining the façade, the formation of several new risers, and steel adaptions throughout the building.
The core alteration involved a significant amount of temporary works. Where possible, we incorporated the permanent works to provide significant programme and cost savings to the client. A major part of this was to install two new permanent foundations, founded 3 m below the existing basement slab. Individual shafts had to be excavated between the existing structure for the new foundations to be formed. Both temporary and permanent steel work could then be installed from these foundations to allow demolition completion and provide as much advantage to the new construction as possible.
05
06
07
07
click to open
Occupied Building
03
When works began, two floors remained occupied. Reducing our impact on the working office environment became one of the key challenges of the project. This required precise coordination and management of the mechanical and electrical contractor working alongside the soft strip crews. All works were carried out successfully without a single incident affecting the occupied floors.
A second challenge was the removal of the demolition arisings out of the building with only a single point of access and a small internal courtyard with a very tight radius on the access road, preventing large transport safe access into the courtyard. This was achieved by installing the external hoist, the use of multiple wheeled bins, adapting the roadway within the courtyard and using a strict traffic management system to ensure safe site entry and exit.
Structural Alterations
04
For structural alterations that had not yet received planning permission, we worked with the client to develop an advancement strategy. Once planning was granted, we were then in a position to progress the works as efficiently as possible. This involved the complete reconfiguration of one of the cores, the removal of two mansard floors whilst retaining the façade, the formation of several new risers, and steel adaptions throughout the building.
The core alteration involved a significant amount of temporary works. Where possible, we incorporated the permanent works to provide significant programme and cost savings to the client. A major part of this was to install two new permanent foundations, founded 3 m below the existing basement slab. Individual shafts had to be excavated between the existing structure for the new foundations to be formed. Both temporary and permanent steel work could then be installed from these foundations to allow demolition completion and provide as much advantage to the new construction as possible.
05
06
07
08
06
06
click to open
Occupied Building
03
When works began, two floors remained occupied. Reducing our impact on the working office environment became one of the key challenges of the project. This required precise coordination and management of the mechanical and electrical contractor working alongside the soft strip crews. All works were carried out successfully without a single incident affecting the occupied floors.
A second challenge was the removal of the demolition arisings out of the building with only a single point of access and a small internal courtyard with a very tight radius on the access road, preventing large transport safe access into the courtyard. This was achieved by installing the external hoist, the use of multiple wheeled bins, adapting the roadway within the courtyard and using a strict traffic management system to ensure safe site entry and exit.
Structural Alterations
04
For structural alterations that had not yet received planning permission, we worked with the client to develop an advancement strategy. Once planning was granted, we were then in a position to progress the works as efficiently as possible. This involved the complete reconfiguration of one of the cores, the removal of two mansard floors whilst retaining the façade, the formation of several new risers, and steel adaptions throughout the building.
The core alteration involved a significant amount of temporary works. Where possible, we incorporated the permanent works to provide significant programme and cost savings to the client. A major part of this was to install two new permanent foundations, founded 3 m below the existing basement slab. Individual shafts had to be excavated between the existing structure for the new foundations to be formed. Both temporary and permanent steel work could then be installed from these foundations to allow demolition completion and provide as much advantage to the new construction as possible.
05
06
07
08
09
10
Occupied Building
03
When works began, two floors remained occupied. Reducing our impact on the working office environment became one of the key challenges of the project. This required precise coordination and management of the mechanical and electrical contractor working alongside the soft strip crews. All works were carried out successfully without a single incident affecting the occupied floors.
A second challenge was the removal of the demolition arisings out of the building with only a single point of access and a small internal courtyard with a very tight radius on the access road, preventing large transport safe access into the courtyard. This was achieved by installing the external hoist, the use of multiple wheeled bins, adapting the roadway within the courtyard and using a strict traffic management system to ensure safe site entry and exit.
Structural Alterations
04
For structural alterations that had not yet received planning permission, we worked with the client to develop an advancement strategy. Once planning was granted, we were then in a position to progress the works as efficiently as possible. This involved the complete reconfiguration of one of the cores, the removal of two mansard floors whilst retaining the façade, the formation of several new risers, and steel adaptions throughout the building.
The core alteration involved a significant amount of temporary works. Where possible, we incorporated the permanent works to provide significant programme and cost savings to the client. A major part of this was to install two new permanent foundations, founded 3 m below the existing basement slab. Individual shafts had to be excavated between the existing structure for the new foundations to be formed. Both temporary and permanent steel work could then be installed from these foundations to allow demolition completion and provide as much advantage to the new construction as possible.
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