Bachy Soletanche Limited prepares Canary Wharf site for new
high-rise buildings
 With London’s finance district,
Canary Wharf proving to be a popular location for some
of the largest international businesses, it is hardly
surprising that the area is home to a number of
ambitious building projects which will add to the
London’s skyline. One such project is taking place at
the Riverside South site, where Bachy Soletanche Limited
(BSL) is constructing a considerable 610m diaphragm wall
for two high-rise structures.
The site is one of the last river fronted areas
remaining at Canary Wharf, located on the west side of
the Isle of Dogs. The two buildings, proposed to be the
second tallest in the Wharf, are specially designed to
compliment the skyline without compromising the views of
the famous three buildings – One Canada Square, HSBC
Tower and Citigroup Centre – that have stood for several
years.
The leading geotechnical firm is working in a joint
venture with Costain under a contract with Canary Wharf
Contractors Limited. The project includes the
sophisticated diaphragm wall technique, as Ben Hardy,
Bachy Soletanche Limited’s Contract Manager for the
Riverside project, explained:
“We were awarded the ground works project to construct a
basement wall around the perimeter of the site, having
proposed the diaphragm wall technique in lieu of the
conforming secant pile scheme. The superior
watertightness of a diaphragm wall for the excavation of
the three floor basement was a big selling point.”
A diaphragm wall is constructed in panels with the
Riverside South project requiring a massive 96 panels to
complete the 610m wall. However before the panels can
even begin to be installed, a guide wall trench is being
created to maintain the accuracy of the wall
construction.
The ‘panels’ are a combination of 1000mm and 1200mm
widths, and are constructed using 2.8m long rope grabs.
They consist of three “bites” – a “virgin” bite, a
“stop-end” bite and a “centre bite”. When these three
bites are complete, each panel is up to 7m in length.
In order to form watertight joints between the panels,
stopend casings containing a double sided water bar are
placed at both ends of the first ‘panel’ prior to
concreting. The stopend is designed so that half of the
waterbar is cast into the panel and half is
protected/contained within the structure of the stopend.
These stopends are then withdrawn once the adjacent
panels are excavated, and the second half of the
waterbar is left behind to be encased in the concrete of
the adjacent panels.
Ben Hardy continued:
“In normal circumstances we would just construct the
diaphragm wall, but with the site being on a large bend
in the River Thames, the Riverside site has a long
history of boat building and boat maintenance. Dry docks
have been built over the top of the other for centuries
before finally being crudely backfilled in the middle of
the twentieth century. A diaphragm wall grab is not
designed to go through these timber, stone, concrete and
steel structures, and therefore the project involves a
significant amount of rotary coring.”
The old docks are cored out using 1500mm diameter coring
equipment and rock augers down to a depth of 12m. The
hard cored out material is then replaced with a soft
slurry mix which the grab can easily ‘bite’ through
after it has set.
Ben Hardy concluded:
“We have a systematic approach to this part of the
project ensuring that the docks are fully cored out on
the alignment of the panels. For the diaphragm wall
operation to run smoothly we can’t afford to have a big
lumps of material obstructing the grabs”
When the wall is complete in mid-spring 2008, the ground
will be excavated by Costain with staged installation of
ground anchors.
Email:
fiona@manifestcomms.co.uk
HYDRO INTERNATIONAL Rainwater Harvesting News 210408
AUDLEY Retirement community living News 210408
T.I. Dynamic Facades Façade and cladding systems News 210408
The Sash Window Workshop Timber Windows and Doors News 210408
Leach Rhodes Walker Commercial architecture practices News 210408
Britannia Kitchen Ventilation Ventilated ceiling system News 210408
SAS International Architectural Steelwork News 210408
Armitage Shanks Washroom Equipment Services News 210408
ISG Jackson Construction Services Specialists New Builds News 210408
Emirates Glass LEAF Awards Architectual Design Awards News 210408
Miller Construction Construction Company Housebuilding Property Development News 210408
Housing Units Independent furnishing store News 220408
Kurawood PLC Organically modified softwood News 220408
Carillion Construction, planning and architecture News 220408
The Wood Awards Premier award for wood in buildings and furniture News 220408
Arup Designers, engineers and business consultants News 220408
Bachy Soletanche Geotechnical Specialists Structural Retaining Walls News 220408
Underwood Carpenter Project and Construction Management Company News 220408
Arup Planning and project management News 220408
Hamptons International International residential agents News 220408
Persimmon Homes Essex Planning,construction and architecture News 220408
L.B. Plastics Window systems company News 230408
Icopal Roofing and construction membranes News 230408
Britspace Modular construction industry News 230408
HKR Architects Architecture, planning and development News 230408
Knauf Drywall Plasterboards Plasters Drylining Wall Linings News 230408
Weatherite Building Services Air Movement Fans Supply Extract Units News 230408
Monodraught Natural Daylighting Sundomes Natural Ventilation News 230408
Kingspan Off-Site Timber Frame Systems Engineered Flooring News 230408
SPG Heat & Power (CHP) Technology News 230408
Jackson Building Centres Building Products News 230408
AICO Fire and smoke saftey products News 230408
Aico Ltd Smoke and heat alarm systems News 230408
Aico Ltd Fire and smoke saftey News 240408
Kent Fire & Rescue Service Safer with Sprinklers News 240408
Trevi Shower valves and kits News 240408
ISG Plc Construction Services Specialists New Builds News 240408
British Gypsum Plaster Plasterboard and Drylining Systems News 240408
Kawneer Systems Curtain Wall Systems Door systems News 240408
Imperial Bathrooms Free Standing Wash Stations News 240408
Gleeds International Management and Construction Consultancy News 240408
Advanced Ergonomic Technologies Ltd Underfloor air conditioning Access Flooring News 250408
Joint Contracts Tribunal Standard forms of contracts News 250408
Inbuilt Sustainable buildings, communities and construction News 250408
Toshiba Air Conditioning Systems Chilled Beams Splits News 250408
Bison Precast concrete products News 250408
Honeywell International Valves Pipework Systems Motorised Valves News 250408
Oventrop Heating and domestic hot water systems News 250408
Harlequin floors Dance floor specialists 250408
Gleeds Management and Construction Consultancy News 250408
Knauf Drywall Plasterboards Plasters Drylining Wall Linings News 250408
MITA Cable management systems News 280408
Senior Hargreaves Sheet metal products for building ventilation systems News 280408
British Woodworking Federation Joinery proffesional and woodworking industry News 280408
RMJM Architects International firm of architects News 280408
Stormsaver Rainwater harvesting systems News 280408
SSQ Slate products for construction industry News 280408
Corus Panels and Profiles Panels and Profiles News 280408
Tarkett Fully Flexible Sheet and Tiles News 280408
ISG Jackson Construction Services Specialists New Builds News 280408
Ward Insulated Panels Metal Roof Cladding Systems News 280408
Miller Construction Property development and construction News 280408
SPACIOTEMPO Modular temporary or permanent buildings News 280408
Spectrum Industrial Signs, cigarette litterbins and smoking shelters News 280408
Enact Energy National Home Energy Conference News 290408
Marshalls Hard landscaping transformation company News 300408
CMS Specialist Geotechnical Solutions News 300408
Clark Contracts Construction, planning and development News 300408
Isover Glass Mineral Wool Insulation News 300408
Lowry Homes Architecture, planning and construction News 300408
Marshalls Hard landscaping transformation company News 300408
Simmtronic Lighting Control Management Systems Dimming News 300408
DLG Architects Architecture, planning and development News 300408
Optex Europe Indoor Infrared Sensors CCTV Security News 300408
DGT Steel and Cladding Steel and Cladding News 300408
GROHE Tap and shower manufacturer News 300408
McKean & Company Construction company News 300408
Armstrong Valves Pipework Systems News 300408
English Partnerships National regeneration agency News 300408
WindowMaster Natural ventilation and smoke detection solutions News 300408
Silverdell (UK) Ltd Asbestos Removal Contractors News 010508
CONNAUGHT Construction planning and development News 010508
Kawneer Curtain Wall Systems Door systems News 010508
Kingspan Insulation Premium and high performance insulation products News 010508
Alpha Rail Fencing Railing Designs News 010508
Monodraught Car Park Ventilation Natural Daylighting Sundomes News 010508
Polyflor Sports Surfaces Safety Flooring News 010508
Westgate Joinery Timber and joinery products News 020508
Marshalls Street Furniture Hard landscaping transformation company News 020508
Eaton Williams Climate control solutions News 020508
The National Lottery Love UK campaign News 020508
Baxi-Senertec Combined heat and power News 020508
Kalzip Innovative aluminium roof and wall cladding system News 020508
Arundel Jones Associates LLP Registered in England and Wales No.
OC330189
Hill Farm, Linton Hill, Maidstone, Kent ME 17 4AL
Tel : 01622 745333
email
copyright all rights reserved
News Categories : Geotechnical Specialists
Piling
Structural Retaining Walls
Ground Anchors Soil Nailers
Jet Groating Injection Grouting
Environmental Engineering
Building Design Engineers
Civil Engineering Projects
|
Geotechnical
Specialists
