Main contractor Bam Contractors awarded the piling and pile testing element of the above mentioned works to Taranto Ltd.
Site investigation reports indicated poor soil conditions throughout the proposed site location of the new grain store and subsequently the new grain store required a piled foundation solution consisting of 1435 No driven precastconcrete piles to support a steel reinforced concrete floor slab and connecting wall structures.
Following discussions with both the main contractor and the Consulting Engineer it was agreed that Taranto Ltd single bar 300mm2 precast driven pile was best suited to the project as it was the most cost effective and met with all design requirements and site conditions illustrated within the SI reports.
During piling works over 12,915m of driven piles were installed with the use of 2 No 5000 series piling rigs. Both machines are fitted with a 5 tonne hydraulic hammer which is used to top drive the precast segmented piles.
Each piling rig worked 12 hour days to meet with the agreed programme, and were installing over 300m of pile daily.
Up to 10No 40ft loads of piles were delivered daily to meet the needs of both piling crews. These were quickly offloaded using 2No JCB 930 Rough terrain Forklifts. In total over 150 No loads were delivered to site. The piles were loaded and manufactured at our production facility in Tandragee Co Armagh and were transported over 280 miles to site in Ringaskiddy.
Taranto used previous experience gained during working on similar projects such as grain store Montrose Harbour Scotland.
The piling and pile testing works originally scheduled for an 8 week programme ran smoothly and works were completed a week early which gave the main contractor a substantial time saving.
It was agreed from the outset that regular testing was key to give the main contractor continuity with their works for both steel fixing and concreting crews.
Pile testing was carried out by our in-house Testing Team and an independent analysis of all results was carried out by Lloyd Acoustics and Kennedy Pile Testing.
Regular dynamic test results along with daily pile penetration, driven records and re-strike data was recorded onto an as built drawing so Taranto Ltd had a real-time picture of each and every pile installed.
This information was collated into a final Technical Report that was issued to the main contractor Consulting Engineer and the Client.