Frequently Asked Questions
Most popular questions
Do you normally carry out a site visit?
Yes, we always visit the site prior to commencing the works. It gives us a chance to talk to you about your individual needs and to assess the mini piling requirements for your project.
How long does it take to install mini piles?
It will vary from one project to another, but it generally takes a few days to install mini piles on a typical house extension. For more detailed information, please contact us directly.
Does my conservatory need piled foundations?
In order to determine whether your conservatory requires piling, we will need to visit the site to look at the current foundations for your house and to assess the soil conditions. Please, contact us in order to arrange a free site visit.
What is the cost of CFA piling method?
The price of CFA piling method depends on the size of the job, which determines the equipment we would need to use, i.e., rigs, concrete pumps, excavator, etc. For an individual quote, please give us a call to arrange the site visit.
How do I know whether CFA piling is the best method for my project?
The best way is to contact us directly so that we can analyse your project information. From there, we will provide you with foundation drawings, pile supervision, inspection, schedules, and pile installation.
Do I need to be on site?
No. Given the site is set out, there is no reason for you to be on site when we start work. We will arrange an initial site visit to check for any potential problems.
Can you arrange for pile calculations and design to be submitted to the local authority?
Yes. We can produce structural drawings for the piling work and submit them to the local authority building control before we start the works.
What maximum depth and diameter can you achieve?
Our bored piling machines are able to install piles of up to 600mm in diameter and up to 40 metres in depth.
Can you drill through rock?
Yes, we have special rigs for drilling hard strata such us moorum, soft and hard rock.
How much noise is generated by driven piles?
The main source of noise is the hydraulic hammer that drives piles in. The noise can reach over 110 dB within a radius of 2 to 3 m, and between 80 and 85 dB within a radius of 20 m.
Are driven piles environmentally-friendly?
Yes, the installation usually produces no spoils and therefore no exposure to contaminated or potentially hazardous materials. The site is left clean and ready for the next construction stage.
What if you start a job and find that the drilling conditions differ from what you have expected?
Our on-site team are experienced in all aspects of piling and should they find that the drilling conditions differ from what we’ve expected, we can build or modify equipment at a very short notice.