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Dry stone walls get guidelines

Construction research body CIRIA is developing best practice guidelines for maintaining dry stone walls. It is being done in a bid to prevent an increasing number of collapses owing to poor maintenance, it said last month. Under a project running from October this year to January 2007, in partnership with consultant Mott MacDonald, CIRIA will produce guidelines on condition appraisal, monitoring, repair and maintenance. The guidelines are needed because around 9000km of dry stone walls provide structural support to the UK road network.

See www. ciria. org/rp723. htm

Boring machine breaks free

The second tunnel boring machine working on Iceland's massive Karahnjukar dam has broken through a fault in a slab of concrete where it has been stuck for six months.

Xplor seeks contaminated work Xplor has acquired geotechnical and geoenvironmental consultants, Integrated Geotechnical and Environmental Services (IGES) in a bid to win more work in the contaminated land sector. IGES staff will remain at their existing base in Kenilworth, Warwickshire, which will be integrated into Applied Geology - a trading division of Xplor.

Battersea gets its piles checked

Piling contractor Bachy Soletanche has completed test piles at London's Battersea Power Station prior to a major redevelopment of the site. The trial included three 900mm straight shaft piles, seven 1500mm diameter straight shaft trial bores and two 1800mm shafts with 5.4m diameter under-reams. The ground surrounding the pile shaft and the founding material under the ream bases was monitored by CCTV cameras.

UK windfarm piling nears end

Piling for the UK's largest offshore windfarm in the east Irish Sea comprising 30 turbines and an offshore sub station is nearly complete. Six of eight 61.2m long, 4.75m diameter tubular steel monopiles have been drilled for Barrow Offshore Windfarm, 7km south west of Walney Island near Barrow-in-Furness.

The 74t Flydrill System 5500 is supplied by German manufacturer Bauer Maschinen.

Cordek gas flows top charts

Cordek has developed a new gas protection system that combines its polystyrene Ventform panels with powerbase membranes. Cordek claimed that tests carried out by Arup Environmental showed a fivefold improvement in gas flow rates when compared to other systems.

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