Subscribe to our weekly newsletters
Subscribe to newsletter

 

Editor's Note: Bachy Soletanche provide:-

Geotechnical contractorsGeotechnical contractors
Piling contractorsPiling contractors
Secant pilingSecant piling
Wall shaftsWall shafts

Request Information

Home
Include Article
Advertise
 

Links
Request Information
Terms of use
Contact

 

Request Facilities / Interiors product information

Request Architectural product information External

Request Architectural product information Internal

Request Mechanical HVAC product information

Request Electrical product information

 

BACHY SOLETANCHE Cleaning Up The River Ribble With Deep Diaphragm Wall Shafts 

Specialist geotechnical contractor, Bachy Soletanche, is working with main contractor KMI Water, a joint venture between Kier Construction, J Murphy and Sons and Interserve Project Services, on a project for United Utilities to treat the water that goes into the River Ribble using a storm water shaft solution involving deep Diaphragm wall shafts and Cased Secant Piling (CSP).

The project, which started in May of this year, is due to run until October and is worth an estimated £4.5m for Bachy Soletanche, and £70m in total for KMI Water. A 27m diameter shaft, adjoining 22m deep 50x20m screening chamber and a 17m diameter shaft constructed by Diaphragm Walling will connect with nine additional Cased CFA shafts on the North side via a 3.5km tunnel constructed 30m below the ground by KMI Water and will pave the way for a cleaner river.

One of the south diaphragm wall shafts is formed by 14 interlocking panels 1m thick by 20m deep. Between each panel a CWS waterbar is being installed to stop water leaking through the joint and ensure maximum water tightness between adjoining panels. Panels are dug under a bentonite suspension, then reinforcement cages are placed and concrete is tremied into the trench. All trenches are going to be approximately 20m deep.

The screening chamber will only be used in the case of extreme flood conditions when the shafts can’t manage the load of the storm water in need of treatment. The 12m deep shafts on the North side of the River Ribble will take up the dirty water, feed it back under the River and into the treatment works on the South side.

The Cased CFA, CSP technique forms a closed structure to act as a barrier in water bearing soils and is ideal for a city centre project, such as the Preston Shafts, due to its flexible and compact operation. It brings with it the following advantages:
* Better tolerance than an uncased CFA secant wall
* Better ultimate appearance and reduced overbreak than an uncased CFA secant wall
* Speedier operation than the more traditional ‘kelly / casing’ rotary bored pile method
* Reduced risk of ‘flighting’ in poor soils than a standard CFA system
* As it is a cased system; it reduces the risk of distress to adjacent structures in certain soils such as sands or gravels

Steve Mallinson, Contract Manager for Bachy Soletanche Limited, said:
“The large southside shafts are more than 20m deep, hence the use of the diaphragm walls which involve less construction joints than bored pile walls. On the northside verticality has also been key throughout this project due to the nature of the interlocking between the male and female piles to ensure a watertight solution is created. Water companies are heavily investing in waste water treatments at the moment so the Preston Shaft project has been a great one to work on and one we’re sure will make a difference to the quality of water going into the River Ribble.”

Email: amy@manifestcomms.co.uk


Teraski Electrical supplies Circuit breakers Electrical switchboards Motor breakers News 190710

Marshall Tufflex Energy management systems Sub metering equipment Optimisation systems News 190710

Leaderflush Shapland Fire resistant doorsets Performance doorset solutions Doorsets News 190710

Knauf Roof insulation Wall insulation Insulation products Internal insulation News 190710

Trend Glass mosaics Custom made wallpaper Glass mosaics tiles News 190710

Granite Transformations Granite kitchen worktops Glass mosaics Recycled kitchen worktops News 190710

Norsound Acoustic door seals Hinge covers Door safety products News 190710

Bachy Soletanche Geotechnical contractors Piling contractors Secant piling Wall shafts News 190710

Lafarge plasterboard Acoustic plasterboard Plasterboard systems Decorative drywall News 190710

SAS International Suspended ceilings Metal ceilings Chilled ceilings Commercial ceilings News 190710

Jeld-Wen Casement windows Sliding sash windows Timber sash windows News 190710

Portman Door closers Pocket door systems Door latching systems News 190710

Baxi Renewable energy Solar photovoltaic CHP systems Carbon heating News 200710

Osram LED lighting LED effect lighting Commercial LED lighting News 200710

Armstrong HVAC heating Chilled water applications Variable speed pumps News 200710

Chloride UPS systems Diesel generators Electrical switchgear Static switches News 200710

Owlett Door closers Architectural ironmongery Door locks Door latches News 200710

KNX Home automation system Automation lighting Building automation system News 200710

Fernox Water treatment manufacturers Chemical water treatment Water cleaner News 200710

Dow Floor insulation Polystyrene floor insulation Roof insulation products News 210710

Cembrit Corrugated roofing sheets Roof cladding Slate roof tiles News 210710

Construction Specialties Wall sheeting Impact protection systems Wall protection sheets News 210710

DuPont Laminated safety glass Office facades Laminated glass panels News 210710

BG Controls Building controls Heating systems controls Energy management company News 210710

Quidos Energy assessors Energy management consultants Air conditioning systems News 210710

Protec Fire alarm systems Fire detection systems Smoke dampers News 210710

CornerTape Sealant tape Silicone tape Sealant products Corner tape News 210710

ERA Multi-point locks Door hardware Door locks Window locks News 210710

Paslode Wood screws Wood fasteners Nail guns Paslode nails News 210710

Construction Specialties Wall protection sheets Hygienic coatings Hospital hygiene products News 220710

Flakt Woods Axial fans Air handling systems Air fan manufacturers News 220710

Monodraught Natural ventilation systems Windcatcher ventilation Sun pipes News 220710

UPS UPS systems Uninterruptible power supplies Power protection products News 220710

Carlo Gavazzi Modular control systems Photoelectric sensors Home automation systems News 220710

Britannia Commercial kitchen ventilation Kitchen ventilation Kitchen extractor fans News 230710

Carlo Gavazzi Current transformers Digital panel meters Energy management products News 230710

Space Air Air heat pumps Air conditioning Water heat pumps News 230710

Pilkington Glass manufacturers Self cleaning glass Insulated glass units News 230710

CK Direct Commercial kitchen ventilation Kitchen extractor systems News 230710

Saint Gobain Drainage pipe fittings Drainage pipe Water drainage pipe News 230710

ICS Eastern Building management systems Building controls Operating control systems News 230710

Schneider Energy management Electrical switchgear Automation controls Home networking News 260710

Catnic Steel lintels Stainless steel lintels Catnic steel lintels News 260710

Schueco Folding sliding doors Sliding door systems Commercial doors News 260710

Action Storage Storage lockers School lockers Steel lockers Plastic lockers News 260710

Mumford and Wood Period style windows Period style doors Conservation products News 260710

Lafarge Lafarge plasterboard Acoustic plasterboard Building materials Drywall systems News 260710

PEL Public address systems Voice evacuation systems Security systems News 260710

HEVAR Energy solutions London hevar Building energy management systems News 260710

Mumford and Wood Period style windows Period style doors Conservation products News 260710

Marley Eternit Wall cladding Fibre cement cladding Fibre cement sheets News 260710

A-Gas Gas cylinders Refrigerant handling Refrigerant cylinders Handling refrigerants News 260710

Andrews Water heaters Condensing water heaters Water heating systems News 270710

Baxi Commercial boilers Commercial water heaters Zero carbon heating News 270710

Leaderflush Shapland Fire resistant doorsets Fire doorsets Performance doorset solutions News 270710

Osram Led lighting Energy efficient lighting Commercial led lighting News 270710

Dimplex Ground heat pumps Dimplex heat pumps Heat pumps News 270710

BlindsUK Window blinds Wooden blinds Venetian blinds Vertical blinds News 270710

Sandtoft Roof tiles Clay tiles Slate tiles Natural tiles News 280710

AVK UPS systems Uninterruptible power supplies UPS remote monitoring News 280710

Schneider Switchgear manufacturers Electrical switchgear Electrical distribution News 280710

UPS Power protection Power supplies Standby generators Ups systems News 280710

Osram Led lighting Luminaire manufacturers Efficient lighting Led luminaires News 280710

Verotapes Surface protection Protection film Heat protection Carpet protection News 280710

NBT Sustainable building systems Building solutions Building envelope systems News 280710

Torry Hill Chestnut fencing Rail fencing Fencing products Sheep hurdles News 280710

Polypipe Rainwater harvesting Rainwater management Terrain drainage Piping systems News 280710

Visqueen Structural waterproofing systems Gas protection systems Building films News 280710

TBS Fabrications Washroom cubicles Washroom accessories Vanity units Duct panels News 280710

The Shutter Shop Window shutters Plantation window shutters Wooden venetian blinds News 280710

Weatherite Hvac systems Air conditioning Kitchen ventilation Heating systems News 290710

Monodraught Natural ventilation systems Windcatcher system Natural ventilation products News 290710

Kalzip Standing seam roofing Low U-value roofing Metal roofing and cladding Solar solutions Green roof systems News 290710

Ardex Floor levelling products Floor screed Floor tile adhesive News 290710

Harlequin Dance floors Sprung dance floors Portable dance floors News 290710

Pilkington Solar control glass Energy saving windows Glass manufacturer News 300710

Armacell Flexible duct insulation Armaflex duct insulation Bacteria protection News 300710

Schueco Skylight systems Aluminium facade systems Aluminium door systems News 300710

Baxi Heating systems Water heating systems Space heating systems News 300710

JS Humidifiers Commercial humidifiers Heat exchangers Cooling systems Humidifier systems News 300710

Flowcrete Commercial flooring Floor coverings Safety flooring Showroom flooring News 300710

Arundel Jones Associates Ltd Registered in England and Wales No. 07334149
Hill Farm, Linton Hill, Maidstone, Kent ME 17 4AL
Tel : 01622 745333 email
copyright all rights reserved

News Categories : Geotechnical contractors
Piling contractors Secant piling
Wall shafts