Cotswold Canal Trust – Bank Stabilisation

Cotswold Canal Trust got in touch via our website in regards to a bank on the Thames and Severn canal that needed stabilising. They had heard about us from one of our previous customers, who we helped with the Dursley Tree House project featured on Grand Designs in 2016.

One of our team visited the site at Ham Mill Lane in Stroud to discuss a solution to stabilise the failed canal bank with the volunteers from the trust. A screw piling solution to support the gabion retaining structure was developed with their Structural Engineer to install 60R screw piles both vertically and raked at 45 degrees using our 400H handheld anchor driver. This stabilisation would allow the Thames and Severn canal to be dredged. The work also formed a small part of a wider effort to eventually reopen the canal for public use.

As a result of our solution and the volunteer team's hard work, more material was prevented from falling into the canal, and they were able to support an adjoining neighbour’s garden from falling further down the hill.

The volunteers were inexperienced in screw piling so an engineer attended site to provide training on the safe use of the equipment. We assisted them with safe working methods to allow them to pile at 45 degrees on a steep slope.

“We had a good session of familiarisation training with one of your engineers on Wednesday . I would just like to say how pleasant and helpful he was, it was a pleasure to work with him.”

Bob Ambury, Cotswold Canal Trust

We enjoyed working with the Cotswold Canal Trust as the team are all volunteers, so they were keen to learn and get stuck in.

We are now assisting the trust with the design of a further 4m high gabion retaining wall which will be supported on screw piles. We are keen to see how this second project progresses and hope to continue to be involved with the wider project of re-opening the Thames and Severn Canal for public use.

If you have a project in mind and are considering using screw piles due to their many benefits, please don't hesitate to get in contact with us.

625kN Pile Test – Restricted Access London Site

When configuring suitable screw piles for a project, our Engineers rely heavily on soil properties determined from geotechnical investigation. Often undertaking soil testing using the ABC Anchors soil test probe, or commissioning a full soil investigation (SI) report from a geotechnical engineering firm provides us with sufficient design information. On small projects, use of our soil test probe instead can significantly reduce the cost compared to an SI report and provide similar results for specification purposes.

There are occasions however when pile testing is necessary to confirm our pile specifications.

ABC Anchors was recently contacted by a Client looking to install screw piles for a residential project in close proximity to the Thames in London. From an initial review of the SI it was understood that the site was underlain by a thin layer of dense gravels, however the soil properties below this were not described in the report. Being London based, an area known for weak Clays, and with a site in such close proximity to a river; it was decided that the soil report could not be relied upon alone. As the project required over 50 piles to be installed with design safe working loads of 20 tonnes per pile, it was critical to test the pile under load to confirm that any settlement was within acceptable limits.

ABC Anchors installed an 89R test pile to an installation torque of 25kNm using our Autoguide 2500X torque head mounted on a 3 tonne excavator. Typically excavators between 5-10 tonnes are used to install piles of this size, however as the site access was restricted to a small alleyway only 1.5m wide, a 3 tonne excavator was the only option. It was a testament to our Engineering team’s ingenuity and the skill of our installers that installation torques of this magnitude were achieved using such a low powered machine.

The pile was tested using our recently redesigned ABC Anchors testing equipment and experienced only 2mm of settlement when loaded to the pile’s ultimate load capacity of 62.5 tonnes. The Federation of Piling Specialists suggest that allowable settlement should be no more than 10mm under working loads.

The testing was a complete success and confirmed the suitability of our 89R rock tip pile for the project.

Garden Structure – Karen’s Childcare

ABC Anchors were approached to assist in a solution for foundations at Karen’s Childcare. They wanted to expand the outdoor area for the children and the available space had a few challenges to overcome.

Site access and foundation positioning was limited, so screwpiles were identified as the best solution by the Client. The piles were to be installed behind a retaining wall and next to a boundary wall; therefore they needed a vibration free and non-destructive installation method to prevent damage.

We used our 400H Handheld pile installer due to a lack of space, ensuring a smooth installation. There was no damage to the wall, as the piles transferred load from the structure to below the wall to prevent it failing due to the additional load of the garden structure.

Our lightweight garden piles were specified by the team here as they were ideal for supporting the low loads (up to 2 tonnes per pile) and are suitable for most soil conditions. The 8 pile system was installed in a day and once finished, the structure could be built instantly, as screw piles are unique in not requiring any wet trades. This removes the time delay in the build for curing.

Our customer was happy we were able to find a solution to building on this tricky site and we are pleased to say they have now completed their garden structure.

“ABC Anchors provided an 8 screw pile solution in a difficult location that was installed by a very professional team of two. it is a great system that is providing support to our Outdoor Structure which was designed, manufactured and installed by Beyond Timber of Dinnington.”

David Ellison, Karen's Childcare

For more information on our services, or to talk to us about your own project, please feel free to contact us. If you have any questions on using a screw pile system, our FAQs may provide the answer!

Training and Familiarisation

CPD Accreditation

ABC Anchors is an approved Continuing Professional Development (CPD) training provider.

We offer training on both the theory behind the ABC Anchors screw piling system as well as practical installation of screw piles using Autoguide installation equipment.

Being CPD accredited ensures that the training offered by ABC Anchors meets strict standards and quality benchmarks, whilst also demonstrating our continued commitment to education within the construction industry. Our training courses will give you introductory knowledge, skills and practical experience necessary to enable you to take on your first ABC Anchors screw piles installation safely and competently.

Training Programmes

We currently offer two CPD accredited training courses at our office and workshop in Heddington, Wiltshire:

Course A: Two day familiarisation course

 

Day one covers the theory of screw piling; an overview of ABC Anchors screw piles and Autoguide installation equipment along with practical installation training.
Day two is held on site at your first screw piling project, where one of our Engineers will monitor your first installation and provide supervision, advice, guidance, hints and tips to your workforce. Please note we can only attend sites within 100 miles of Heddington.

 

Course B: One day familiarisation course

 

Includes Day One of the two day familiarisation course as above.
Intended for course attendees whose first screw piling project is further than 100 miles from Heddington.

Confor Woodland Show 2017

Autoguide Equipment and ABC Anchors would like to thank everyone that joined us at the Confor Woodland Show last week. We hope you all enjoyed the show as much as we did; we were definitely glad that there was slightly less rain and mud than the last trade show we attended!

If you saw us at the show, you probably noticed that we are celebrating our 40th anniversary this September! We have been celebrating in a number of ways, including building a special edition Midi Postmaster, as well as handing out some free gifts at the stand. We are happy to report that our gift bags, including a bottle of ‘Ruby’ port were very well received, although some of the staff here are a little disappointed about the lack of leftovers!

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RD Residential – Garden Studio

This project involved the construction of a timber-built garden studio in West London.

Screw piles were a preferred choice for the foundations, as the proposed location for the structure was at the base of a mature tree and in a tree root protection area.

The access to the site was also restricted allowing only hand held equipment to be used.

Both the customer and contractor for the build were new to screw piles and had been referred to us by their structural engineer, all the information was provided to each party and the system and method was approved.

The 60R product range was chosen due to the loading and the structure, and the unique 400H Hand Held anchor driver was chosen for the installation. The ground conditions varied across the site so additional extensions were used to achieve the required torque for the design load.

The foundations for the garden studio were successfully completed and the contractor was very happy with the service received:

“From start to completion ABC Anchors were a pleasure to deal with, very supportive, and easy to talk to when queries arose.  We would highly recommend both their products and service and will definitely be using them again for any piling needs we have.”

Ed O'Donnell, RD Residential

We Are On Your Screens!

Save the Dates...

21st September

Dursley Tree House featured on Grand Designs!

Wednesday 21st September 9pm on Channel 4

This project will also be featured in The Sunday Times Homes section on the 18th September and Grand Designs magazine 12th September.

 

 

22nd September

Another to look out for! Woodman’s Treehouse

Thursday 22nd September 8pm on Channel 4

The building of the treehouse was filmed for the first episode of the new series of George Clarke's Amazing Spaces.

ABC Anchors are proud to be involved in these projects as the manufacturer of the piling work needed for the foundations . Dursley Tree House and Woodman’s Tree House are just one example of the solutions ABC Anchors has to offer to most screw pile applications.

Don't miss the opportunity to see our piles in action!

 

 

Julia’s House Children’s Hospice

This project involved installing 6 quantity 60RL* screw piles to support a small wooden Cabin.

Screw piles were the preferred choice of foundation for two reasons, firstly as there were tree roots and secondly, the ground dropped away by up to 1meter in some pile positions.

Using our 400H hand held torque head 2 rows of 3 piles were installed with the front 3 piles being installed to ground level and the back 3 protruding above ground level by approximately 1m.

As a precaution a cross brace of the 3 rear piles was designed to be used to ensure lateral stability.

The piles were terminated with a flat 200mm x 300mm plate which allowed easy connection of the steel ring beam for the cabin to sit on.

Once installation was complete it was found that the stability of the piles was adequate and cross bracing was not required on this occasion.

 

Customer’s feedback-

 A brilliant system which I wouldn’t hesitate to use in the future

Maurice Fishlock

 

*the 60RL is a light duty of the 60R, a cheaper option for low loadings, the difference between the 60R and 60RL is the tube thickness.

CLM – Ferry Bridge

Ferry Bridge is an historic suspension bridge in Burton on Trent which was in need of refurbishment work during October 2015.
In order to carry out the repairs to the bridge a scaffolding system was required to be set up to allow access for the contractors. The Scaffold system would rely on the screw piles to act as the full support. The loading on the anchors would be both the weight of the system and also the side loadings from the river current and any debris floating down stream.

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Conservatory Underpinning – Cooke Brothers

The conservatory had dropped approximately 60mm and opened up the brickwork. When I installed the Screw-Piles and used the underpinning bracket and jacks, I was able to lift the complete structure back to original height.

I used my own Micro Digger as a powerpack for the 400H driver head.

The gap in the brickwork was closed, windows and doors that were jammed out of alignment all now work perfectly.

I was very happy with the serviced provided by ABC Anchors, they were very accommodating with shipping the equipment over to me in northern Ireland. I would recommend the screw pile system to anyone with similar foundation issues. it worked very well.

Allistair Cooke