Big machines with a big job to do
Work to cut the new line of canal continues apace at Capels Mill. Undaunted by the unseasonal rainfall some impressive heavy machinery has arrived on site.
Easily observed from the Dr Newton’s Way bridge the 64 tonne sheet piling rig can be seen driving 6.2 metre lengths of steel piling to form the edge of the canal.
This is the first section of over 100 metres of piling on the western side of the Capels Mill railway viaduct.
Currently each pile is driven downward to the correct level in just 25 seconds.
The company contracted for this work is Ivor King Sheet Piling of Nuneaton in Warwickshire.
The importance of preparation
Project manager Dr Simon Dunn explained that the piling was going well…
“As in most things good preparation is the secret.
“We have laid out the lines and levels using measurements taken from established datum points around the site.
"We call them the setting out stations. Each one provides us with a known level and fixed position using Ordnance Survey coordinates”
Poured concrete piling
On the eastern side of the viaduct Severn Bore Piling Ltd. is preparing to practice its own speciality… 'contiguously poured concrete piles'.
A lorry mounted auger will bore holes 15 metres deep!
Pictured above right is the Italian built A312 drilling rig mounted on an eight wheeler, Swedish produced, Scania lorry. Along side is its driver Andy Lomberg.
All very European!
The local connection
But there is a local connection. Andy commented…
“My name sounds a bit German I suppose but I walk to work here. It takes me seven minutes from my house over on the valley side.
"Our firm is on another job in Dundee but I opted for this one!”
The final structure
Simon Dunn described what Andy and his big rig will create…
“Two hundred and ten holes will be bored where you see the blue marks on the ground.
"The auger drills down 15 metres.
Steel casings are inserted into the top 6 metres to prevent spoil falling down into the hole.
"Reinforcing steel cages are lowered down and finally the hole is filled with concrete.
"The steel casing tubes are withdrawn to be used again.
"The finished structure will be a 180 metre long retaining wall to support the ground above the line of the canal."
Click here, or on the icon right, to find out more about Severn Bore Piling.
Pictured above Simon Dunn & Andy Lomberg discuss the finer points
The final picture shows the steel casings