Tight Fit?

Terrier Rig

When it comes to sites that have narrow or restricted access, we reckon that there is no better drill rig than our Terrier. It may be the baby of our drilling fleet, but don’t let its diminutive size fool you.

In the past year it has worked in basements, narrow side passages between houses, amid demolition debris and in a host of other conditions that would have precluded larger rigs being used.

If you add in the fact that it can work on inclines as steep as 30 degrees I think you’ll agree that our Terrier is a little gem.

This week  we’ve been using the Terrier to carry out post-demolition verification sampling. We’ve been able to pick our way through the demolition rubble, getting access to the entire site to drill a pattern of boreholes to 5m depth.

For further information, or to discuss your drilling requirements, please contact Angus Gale – 01296 739433

Northern Powerhouse?

Pile Probing – Manchester

We like to feel  that we’re contributing to the Northern Powerhouse and this week saw us working in Manchester on a project to construct student accomodation in the city centre. Our role was to clear locations of buried obstructions prior to piling commencing.

We successfully cleared 30 locations to 8m depth in a single day – a total of over 250m linear metres of pile probing. With the piling rig arriving the following day, the result was a happy client.

The fact Manchester was enjoying its warmest day of the year so far was a pure coincidence, though it was a welcome surprise not to get wet*!

For more information or to get a quote for pile probing at your site, please contact Steven Partridge – 01296 739413

[* The editor used to live in Manchester]

Rapid ‘CBR’ Testing

Clegg Impact Hammer

Let’s face it, sometimes you just need CBR results fast. Really fast. Maybe you need to identify any soft spots in a piling mat or in a road sub-base before the compaction plant leaves site. Or – be honest – maybe you just forgot to get the required testing done in time. Either way, we have a solution for you. We can test your sub-base using our Clegg Impact Hammer, typically completing 80+ tests in a day with results available immediately. Although the CBR value measurements aren’t as accurate as those obtained from a conventional test, we reckon they are acceptable for about 90% of the enquiries we receive.

For further information please contact Steven Partridge – 01296 739413

Pile Probing

Pile Probing – London

We were contacted by one of our regular clients with an urgent request to carry out pile probing at one of their sites in London. We were able to be on site the next day, using our Geoprobe rig to clear 55 pile locations to a depth of 4m, all before 3pm. To make matters even better, the sun shone all day.

For more information about our pile probing service please contact Duncan Eastland – 01296 739431

Contract Value: <£2k


Earth, Wind and Fire…mostly Fire

After the Fire
After the Fire

It’s never good when your business premises are reduced to ash in a raging inferno. But this was just the scenario faced by one of our clients, when their car showr0om and repair workshop has burnt down overnight.

We were on hand the next day, working closely with both the fire brigade and the demolition crew. We were able to obtain the vital geotechnical data necessary to allow design for the new buildings to progress.
Here you can see our Terrier rig taking soil samples and completing in situ standard penetration tests and dynamic probes to depths of up to 15m.

Now the flames have died out, the demolition has been completed and the new structure has been designed. Our client is well on the way to be back in business.

Somewhere Under The Rainbow….

Dynamic Sampling Rig
Dynamic Sampling in the Rain

……is our mini dynamic sampling rig! In fact, its photographed here having its oil checked during a day’s work at a site on the south coast.

The geotechnical survey, which comprised standard penetrations tests (SPTs), dynamic probing, CBR tests and plate bearing tests, was designed to allow the design of foundations for a leading supermarket chain’s new store.

The site had a history of industrial development so, not surprisingly, it was littered with large, buried concrete obstructions from previous structures (foundations, beams and piles). We will soon be returning to complete pile probing at each of the new pile locations to enable the augers of the piling machines to keep turning thus avoiding expensive standing time.

Hopefully it will have stopped raining by then…..and no, sadly, we didn’t find the pot of gold at the end of the rainbow.

Centre Point, London – Pile Probing Plus

The prestigious Centre Point Building, located at the end of Oxford Street in London, is currently undergoing major refurbishment as its converted from offices to luxury apartments. The work requires additional pile foundations to be installed, both around the building and in the existing basement car parks. The only problem was that no-one could be really certain what else might be in the ground beneath the site.

We were called in to carry out pile probing for the 100+ piles to be installed. Careful planning ensured that we were able to work around the numerous HV cables, tube and Crossrail tunnels beneath the site, identifying obstructions in a number of locations. On such a congested site it was not possible to simply reconfigure the foundations and relocate the piles.

Instead we returned to site and using a DTH hammer, we were able to break up the obstructions in situ, without disturbing the surrounding structures. All part of our Pile Probing Plus service.

For more information please contact Duncan Eastland – 01296 739431

White Cliffs of Dover

White Cliffs of Dover
White Cliffs of Dover

We were commissioned to carry out a geotechnical investigation, including rock coring, at a site located just a stone’s throw from  the busy harbour of Dover.

Our Commachio 205 and drilling crew were able to produce high quality cores and gain SPT/CPT data from 4 boreholes, each drilled to a depth of 20m below ground level. All completed on time and on budget.

Voids were encountered at various depths fueling rumours of secret smuggling tunnels similar to those we found in Margate last year. Unfortunately the only treasure recovered were metres and metres of chalk. Better luck next time lads!

Machu Pichu

alma roadOK so not exactly Peru, but a very steep, terraced site in the Chilterns.

The extremely tight access didn’t prevent our site team from getting in and completing a comprehensive geotechnical investigation, including soil sampling and dynamic probing to 10m depth. The work was completed on time and on budget, with dynamic probing data issued to the client on a ‘same day’ basis to assist with pile design.

Pile Probing Challenge

We do like a challenge, so when a client asked if we could probe 65 pile locations in a single day we said yes. Just to make it more of a challenge our client also wanted soil samples taken from each location and analysed for a range of potential contaminants.

The site was an office car park crammed with cars during the week, so the probing had to take place at the weekend. With noise restrictions preventing Sunday working and project deadlines meaning the work had to be completed in a single day, we knew we would have our work cut out. Each location required us to core the surface pavement, take a soil sample from the upper metre of soil profile and probe to 3.6m depth – a total of 234m of probing. But happily, using our Geoprobe Direct Push drill rig we were able to get everything completed in time to see the kick-off of the FA Cup.

The soil samples were dropped off at our own laboratory later the same day for ‘fast track’ analysis and the results provided to the client 3 days later.