Marylebone Square, Moxon Street

London
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Story

Marylebone Square is a very substantial mixed-use development in a highly sought-after part of central London. Spanning an entire block along Moxon Street, the development will provide 54 luxury residential apartments arranged around an inner courtyard and underground parking on two of the three basement levels. At street level there will be an attractive colonnade of retail units and a range of community facilities. Marylebone Farmers’ market will be accommodated within the central courtyard space.

 

Our scope involved some minor enabling works followed by extensive excavation works to a depth of 15m, the construction of a three-storey basement and a six-storey hybrid frame. GSS Piling provided the piling works.

3 levels of basement
49,000 m3 excavation material
41no 25m deck spans
3145 tonnes of rebar
20,4960m3 concrete
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highlights

Basement Construction 

Programme efficient top-down construction methodology was used. Our gantry (logistics) slab solution within the footprint of the site facilitated the removal of muck away during the bulk excavation phase. A UKPN room for the tower cranes was also supported by a slab on plunge columns which were installed by GSS Piling.

The substructure will consist of a B2 piled raft slab, supporting a central spine wall (1m in width),several vehicular access ramps, and a waterproof membrane.

Hybrid Structure 

To suit the requirements of this mixed use residential and commercial development, the superstructure will be constructed using a mixture of in situ RC flat slab and PT concrete construction (designed in-house). There will be two cores both constructed using a jump form system.

In-House Services

Muck-away services were provided by Kingscote Haulage Ltd who also supplied the piling mat. 456 secant piles were installed by GSS Piling to the perimeter of the basement as well as 34 temporary plunge columns. Kingscote Design Ltd (our in-house design consultancy) provided the designs for all of the top-down elements as well as falsework, formwork, any other temporary works designs, and a posttensioned slab on level 1.

Restricted Access and sensitive work

Located in a sensitive area of Marylebone with a primary school and a creche housed in adjacent streets meant that careful planning and coordination of deliveries to site was required to ensure that these fell outside school and creche drop of and pick up times. Narrow streets leading up to the site also required coordination to prevent congestion in surrounding streets. Our gantry slab solution provided on-site holding space for deliveries to site.

Project
Marylebone Square, Moxon Street
Architect
Simon Bowden, TP Bennett
Engineer
Alan Baxtor
Contractor
Concord Devolopments
Sectors
Residential
Services
Superstructures
Design
Piling
Haulage
Location
London
Status
Current
Project summary
Project summary
Project
Marylebone Square, Moxon Street
Architect
Simon Bowden, TP Bennett
Engineer
Alan Baxtor
Contractor
Concord Devolopments
Sectors
Residential
Services
Superstructures
Design
Piling
Haulage
Location
London
Status
Current

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