SPI Piling Ltd are employed by Hope & Clay Ltd to install a total of 285nr 9m long sheet piles to enable H&C to excavate a trench and install a new sewer/drainage system at 110 Buckingham Ave in Slough.
The sheet piles have been installed using a combination of the ABI Leader rig and the Tosa pile press system.
During phase 1 of the piling scheme in Winter 2020, the sheet piles were installed using the leader rig with phase 2 consisting of extracting the previously installed sheet piles using the pile press in Spring 2021. Phase 2 of the piling scheme was completed in Spring 2021 when the extracted sheet piles were reinstalled in the same visit using a combination of the ABI leader rig as well as the Tosa pile press where vibration sensitivity was a concern and therefore peak particle velocity (PPV) limits had been set by various service providers.
SPI Piling Ltd are currently on site in May 2021 completing the final phase of the sheet piling scheme, which consists of extracting the sheet piles using the Tosa pile press system.
SPI Piling Ltd have been awarded the temporary and permanent sheet piling works by Kier Infrastructure Ltd for the sheet pile installation across the river Calder. The works are required to enable Kier to repair the existing culvert which has breached which would result in the river Calder bank failure if the remedial works was not required. The work is currently ongoing and will result in numerous visits. Duration of works 3.0 weeks.
The work consisted of the installation of 136nr L606 sheet piles varying in length from 10.0 to 12.0m. The piles were installed in 2nr lines across the river Calder to stop the water flow to enable the breached section to be pumped down to enable Kier to carry out the repair works to the culvert. The sheet pile installation was carried out using the 35t excavator, Grizzly side grip and Dx25 impact hammer with all works carried out working from floating pontoons. Duration of works 1.0 weeks.
During the draw down of the river the bank started to collapse. SPI carried out the installation of an additional 30nr L605 x 10.0m sheet piles working from floating plant using 35t excavator, Grizzly side grip and Dx25 impact hammer with the piles installed into the tow path to cut off any further water ingress caused by the collapse of the embankment.
This visit consisted of the installation of 169nr L605A x 12.0m sheet piles driven into the embankment surrounding the repaired culvert. The sheet piles were installed to tie into the new concrete culvert repair and to form a wash wall to protect the river embankment from barges manoeuvring down the river when reopened. The sheet pile installation was carried out using the 35t excavator, Grizzly side grip and Dx25 impact hammer carried out on a stone platform. SPI also carried out the removal of the damaged/redundant existing wash wall piles using the grizzly side grip piler. Duration of works 3.0 weeks.
SPI’s final visit will consist of the extraction of the 136nr sheet piles which span the river Calder to enable the passage to be reopened. Works will be carried out using a pile tosa press to extract the sheet piles handled by the 35t excavator and grizzly side grip piler whilst working from pontoons. Due to restricted access the piles press has to be stripped down into 6 tonne sections (or below) to enable the excavator to position the tosa on the pile line to be extracted whilst working from the pontoons. The tosa pile press will have to be tripped down on 3nr occasions and rebuilt whilst the piles are extracted and pontoons relocated to gain access to the piles to be extracted. Careful coordination will be required to be carried out to ensure the activity runs flawlessly. The extraction is due to take 3.6 weeks and is due to commence August 2021.
SPI and Kier are working well together and visits 1, 2 & 3 are all going to plan and are meeting all programme requirements.
ISLE OF MAN FERRY TERMINAL LIVERPOOL
Prior to SPI Piling Ltd’s arrival on site, John Sisk and Sons Limited formed a stone piling platform and access ramp from the existing Dock Walls down into the Dock to a level of 500mm above the dock water level. SPI Piling Ltd, were engaged by John Sisk and Sons Limited to work within 3nr areas for the new Isle of Man Ferry Terminal. The 1st main work area at West Waterloo Dock, involved the installation of 2nr permanent 13m long PU28/PU32 curved sheet piled walls. These piles were installed as pairs on the straight line area and single for the curves. The piles were installed with an ABI14/17 Leader Rig supported by a 70T crawler crane for feeding of piles and impact driving. The 2 lines of sheet piled walls were tied together with M76 and M90 tie-bars connected to 430×100 twin PFC waling beams bolted to the sheet piled wall with M33 and M36 bolts. The area was then backfilled to allow a capping beam to the external line of piles this new area is the car parking/waiting area for the Isle of Man Ferry Crossing. Work areas 2 and 3 (Dock Inlets) were installed in the same manner but these 2 areas were straight sheet piled lines and again fixed together by the 430×100 twin PFC and backfilled.
Our client Instalcom Limited, requested our assistance in installing 40nr 339mm diameter tubular bearing piles with a 12mm wall thickness. These piles had the top 2.5m painted as the tops of the piles were elevated above ground level to build a new switch house within a live substation. With working so close to transformers and live electricity, 2 vibration monitors were set up prior to our arrival to monitor the electricity structure. SPI Piling were responsible for setting out of the pile locations to allow the 450mm diameter dangle drill on the Kobelco 350LC excavator to drill down 6.0m to minimise the vibration levels within the live substation. Once the pile locations were augered, the grizzly side-grip vibratory hammer picked each tube up and vibrated them into the ground, once the piles were installed to a depth of 7.0m, the Grizzly hammer locked onto a driving plate welded inside the tubes to prevent any of the top 2.5m painted section to be scratched. When the Grizzly vibratory hammer hit refusal criteria, the DX25 excavator mounted impact hammer was attached to the excavator and all piles driven to the required depth of 7.8m below platform level.
This project for ASKAM Civil Engineering consisted of the pre-auger and installation for a permanent retaining wall consisting 44nr new GU16N steel sheet piles varying in length from 6.5m to 8.0m.The 450mm diameter dangle drill for augering and Grizzly MG90 side-grip vibratory hammer were used to complete this project. Due to the close proximity of the rear piled wall to the purple sulphuric acid tank, a vibration monitor was installed which monitor the vibrations 24hr a day and a weekly report of the vibrations produced. Upon completion of the pile installation, a 540mmx100mm steel capping beam will be welded to the pile tops. The client will then dig down to the open side of the piled wall and construct a new concrete base and plinth for a new chemical tank.
This project is still in progress.
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