Water Retaining Structures
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Clench Warton STW, Kings Lynn, Norfolk
Adapted VARIO and CB 240 used to form two 20m circular tanks
On the banks of The Wash in King’s Lynn, Norfolk, Principal Contractor Galliford Try-Meica is overseeing the £25 million construction of a new Bio-solids Treatment Centre.
Sub contractor, Bell Formwork Services Ltd were offered a £1.5 million contract to build the two 20m diameter concrete tanks. Working in cooperation with PERI, they decided to pour the 20m high tank walls in four pours using 5m high curved adapted VARIO shutters.
After pouring the first lift, CB 240 climbing scaffold was brought in to support the formwork and provide access. The nature of the CBC system means that the shutters and platforms can be craned up to the next level, even during the episodic, strong winds
coming in from The Wash. As a result, the entire external formwork for each tank could be raised in a mere six hours.
Bell Formwork, who have been specialising in RC construction for 35 years, appreciated the expertise offered by PERI early at the pre-tender stage. The partnership evolved successfully throughout the project with the PERI fabrication department preassembling high quality curved adapted VARIO shutters, and the technical department offering attentive, ongoing support to the initial design.
When Bell decided to double their order to one set of formwork per tank, in order to meet the demanding program schedule, PERI fabricated and delivered an additional 54 curved VARIO shutters in under four weeks.
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| PERI Systems In Use |
VARIO GT 24 Girder Wall Formwork
CB Climbing System
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Stuart Edwards
Site Supervisor
“From the time of our early involvement in this major project, we looked to PERI for assistance. The pre-fabri-cated curved VARIO system and the technical support offered were excellent and when problems arose they were quickly solved. We would have no hesitation in using PERI again.”
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PERI scope 1|2008, GB
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