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.

Installation of a ‘Caterpillar Walkway’ at Thames View School.

ABC Anchors supplied and installed the screw piles for a tubular steel framed canvas covered ‘Caterpillar Walkway’ at Thames View Junior School.

For the installation localised pockets of Tarmac were removed from the playground to allow 12qty 60R Screw Piles to be installed. One pile for each canopy foot.


 

 

Due to very poor ground conditions and relatively high Compressive/Tensile and lateral loads requested, the piles were installed to a depth of 4m.

The piles consisted of a 60R 2m lead section with 8” 10” helix, a 1m conical extension and a 1m 240mm diameter peat pile extension. These larger diameter top sections were installed to withstand the high side loadings.

All 12 piles were installed to between 3 & 4kNm using an ABC Anchors 500X torque head fitted to a 5t excavator. This installation torque equates to an axial load of between 90-120kN/pile.

All 12 piles were installed with little disruption to the school playground and with little soil away.

Connection from pile tops to steel canopy legs consisted of matching square flange plates with 4 x M16 bolt holes in each plate.

Broadbridge Heath Roundabout sign

A screw piled foundation proved to be the best solution for this round-a-bout sign in Broadbridge Heath. The ground where the sign is situated had numerous electric and communication cables running through therefore concrete foundations would not have been possible.

The sign itself was not heavy but the foundations had to withstand high lateral loads imposed by potential high winds, 4 screw piles were installed beneath a steel grillage all set below ground level.