Contractors World |
||
| Contractors World UK & Ireland |
2011 Volume 1 Issue 7 | |
| Forward: | Print Page | Register (free) | Bookmark Page |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| BREAKING NEWS • Snorkel UK Appoints PLP Lift Trucks As Regional Dealer • A-Plant to Merge Lion Trackhire and Eve under New Name • Lendlease have renewed their framework agreement with Human Recognition Systems. • RPS Appointed for GWR Exeter Depot Expansion • CASE appoints new heavy-line specialist
LIBRARIES
|
 PAGE 14 
|
|
David Taylor reports Groundforce makes sure excavation is in good shape Irish civil engineering contractor BAM Civil (formerly Ascon) found itself considering these pros and cons when planning the construction of a new water treatment works alongside the River Barrow at Athy, Co. Kildare. BAM Civil is building a new water treatment plant at nearby Srowland as part of the Barrow Abstraction Scheme. Besides the treatment works, BAM’s €22 million contract also includes two new reservoirs and an in-situ concrete Intake Structure on the river bank to collect the water. When completed in March 2013, the scheme will supplement the water supply to Dublin, roughly 50 miles north-east of Athy. Unusual structural dimensions were a challenge for contractors working on water treatment works alongside river. But BAM Civil decided that an excavation more akin to the funnel-shaped contour of the structure would be more cost-effective. “We know the market very well and have a good idea about who’s capable of what,” comments BAM Civil contracts manager Joe McFadden. “We were aware that Groundforce’s support system could handle this sort of task. “With Groundforce Ireland’s help we designed an excavation which closely reflected the shape of the Intake Structure. The sheet piled retaining wall followed the exact line of the structure with only about 1.5 m gap between the sheet piles and the concrete formwork,” explains Mr McFadden. |
|
|
| PAGE 14
|
Contractors World Magazines are published by VVV Limited Publisher: Roger Lindley Page updated: October, 2011 |
READ OUR OTHER MAGAZINES
 Online Buyers Guide of Construction, Quarrying
| |
|
||
CONTRACTORS WORLD MAGAZINES |
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. |
|
| Registered Office: 54 Sun Street, Waltham Abbey, Essex EN9 1EJ, UK Registered as a company in England and Wales, number 3892263 |
||
|
Contractors World, CP&E - Contractors Plant & Equipment and the Contractors World - UK & Ireland Edition are independent publications published through CWMag 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. |
||
For most practical purposes, a rectangular excavation is the easiest and most cost-effective solution when carrying out construction work below ground. It is easy to dig and supporting the sides is straightforward. However, when the structure you are building is of a very irregular shape, the extra digging and muckaway can become costly and time consuming. 
Naturally, the Intake Structure sits almost in the river itself and its construction required a sheet-piled cofferdam to create a dry working area 5 m below peak water level. The traditional solution here would have been to install a large rectangular cofferdam with lateral supports of fabricated steelwork. 
