Hello!



Click here to register
for FREE copies
[confidentiality
guaranteed]
Contractors World


The UK and Ireland's only FREE to READ publication for construction, demolition, mining and quarrying industries
in a convenient digital format

Contractors World  - UK & Ireland
2013 Vol 3 No 4
Tell a friend:
Print Page Register (free) Bookmark Page

Contractors World UK
More news in the
Contractors World - International issue


BREAKING NEWS


LIBRARIES

• back issues
•  brochures
• 
videos


recent issues

CW UK & Ireland
No: 1 No: 2

CW UK & Ireland
No: 2 No: 1 No: 2

CW UK & Ireland
No: 1 No: 2 No: 1 No: 2

 



previous page   PAGE 14 of 51    next page

Tweet this page


This page could be your company.

Reach 17,000 decision makers in the construction industry throughout the UK & Ireland.

Advertise in Contractors World


 

 

Piling Goes to Plan on King’s Cross Development - Page3 of 3

 

Prefabricated steel pile cages up to 30.0 m long were installed, primarily due to tension loadings induced by ground heave associated with basement excavation.Simultaneously a second rig, a 75 t. Mait HR 260, using the rotary bored and cased piles methods, was installing the 271 rotary bearing piles, 750 mm diameter, typically 26.0 m long with low level cut-offs.

Temporary single wall casings were used through some 3 m made ground and river terrace deposits and sealed into underlying London Clay. Residue of pile length was drilled with conventional open auger techniques into stable cohesive London Clays to design toe level without bore support.

Prefabricated steel pile cages up to 30.0 m long were installed, primarily due to tension loadings induced by ground heave associated with basement excavation.

Because of the need to a continuous supply of concrete at times, the contractors used their own Schwing Stetter 1250 model pumps using concrete supplied by Hanson from a nearby batching plant.

With the piles in places preparation for excavtions and other works can begin. In the background, part of the original gas tanks can be seen which will be an integral part of new housing towersAssociated Works

The retaining walls and structural piles was the main part of the £1.05 million contract for P J Edwards, but there were also other associated works.

With the piles in places preparation for excavtions and other works can begin. In the background, part of the original gas tanks can be seen which will be an integral part of new housing towers

These included a number of smaller diameter piles outside of the retaining wall and piling foundations for two tower cranes.

There were 3 maintained load tests for bearing piles to validate design Factor of Safety of 2.2 adopted for works (in accordance with current LDSA design guidance notes). The geotechnical design was verified by the satisfactory static testing of three of the piles up to 5,000 kN.

All piles were integrity tested using NDT instrumentation. Sonic logging tubes were also inserted in to the large 1,500 mm pile.

Job Done To Main Contractor Satisfaction

Despite challenging weather conditions at time, the 14 people on site successfully completed the 10 week project, two weeks ahead of schedule. The company is currently negotiating for other works associated with the massive development that will transform what had become a brownfield wasteland to a all embracing community development.

The project required 265 tonnes of steel and 4,410 m³ of readymixed concrete. For cased rotary bearing piles the materials quantities split is 192 t of steel / 2900 m³ concrete; for CFA contiguous bored pile retaining wall materials is 70 t steel / 1400 m³ concrete; for single large diameter 1500 mm rotary pile constructed under bentonite support fluid the material used was 3 steel / 110 m concrete.

Click here for more information:
>>> P J Edwards Co (UK) Ltd
>>> Llamada Piling Rigs
>>> Mait Piling Rigs

 

previous page   PAGE 14 of 51   next page

 
red divide
CW Contractors World - the digital publication for construction industry

Contractors World Magazines are published by VVV Limited
©VVV Ltd 2013 All Rights Reserved

Publisher: Roger Lindley
Content compiled and edited by:
Roger Lindley MCIM

Page updated: June/July 2013

 

READ OUR OTHER MAGAZINES

Contractors World -UK & Ireland
Contractors World - International up-to-date information on news, plant and equipment from around the world.

CLICK HERE


Contractros World - Australia
Australia News


cmldir.com
Online Buyers Guide of Construction, Quarrying

Contractors World - Eco Friendly publishingBy reading this page on line you are helping to save trees.
Trees saved up to June/July 2012 > 1567


The monthly magazine Contractors World - UK & Ireland is proud to promote and support the Lighthouse Club Please give generously. Contractors World Support the Lighthouse Club


CONTRACTORS WORLD MAGAZINES
CML House
7 Bell Mead
Sawbridgeworth
Herts CM21 9ES
UK
Tel: +44 1279 600598
Email: infodesk@cwmags.com
URL: http://www.cwmags.com

Contractors World is many magazines in one - construction news for latest information (read our daily news pages) and a site equipment magazine featuring site reports from around the world and reviews of construction plant and equipment as it is introduced.

Written specifically for earthmovers, quarry management, plant hire executives, and others with an interest in the construction and related industries. Configured for all Internet devices, iPads, tablets and PDF readers.

Registered Office: 54 Sun Street, Waltham Abbey, Essex EN9 1EJ, UK
Registered as a company in England and Wales, number 3892263

Contractors World and the Contractors World - UK & Ireland Edition are independent publications published for CWMAGS Ltd by VVV Ltd.

The mention of companies and/or products within the editorial pages or in advertisements does not infer any endorsement by the publisher or editors. All editorial is freely given, without conditions and at the sole discretion of the editor. Opinions expressed by contributors are not necessarily those of the publishers. Other than saving and distributing in complete page formats, copying, reproduction, decoding or disassembly of content or computer code by any means of any part of the publication is prohibited unless prior approval is provided by VVV Ltd in writing and confirmation received of agreement with any terms and conditions applicable. PDF version may be downloaded for personal use but no content may be used for promotional purposes or copied to web sites. All images and video content are subject to copyrights.