Big Yellow Storage, Wapping
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Project Overview
JP Dunn Construction were appointed by Galliford Try to deliver the groundworks and reinforced concrete package for the new Big Yellow Storage facility in Wapping.
The development comprises a single-storey, waterproof concrete basement with an eight-storey steel frame structure above. Our works included pile attendance, bulk excavation, waterproofing, temporary works, underground drainage, high-quality power-floated concrete floors, metal deck toppings, and external works.
This project continues our long-standing relationship with Big Yellow Storage, having previously delivered facilities in Twickenham, Sheen, and Eltham.
Project Details
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Pile attendance
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Ground beams and pile caps
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Design and installation of temporary works to party wall elevations and highway boundary
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3m-deep underpinning
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Below-ground drainage including piped attenuation system and Thames Water sewer connection
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RC waterproof ground floor and liner walls to provide Grade 3 basement protection
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Cavity drainage system to basement slab and liner walls
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RC frame from lower ground to ground level
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Power-floated concrete toppings to all floors, with dry shake finish
The basement was constructed using Caltite waterproof concrete (Type B) to the LGF slab and liner walls, combined with a Type C cavity drainage membrane fixed to the slab and internal lining walls. This dual system achieved the required Grade 3 protection standard.
All slabs were power-floated to FM3 tolerance with a plain finish. A surface hardener spray was applied to enhance durability.
A complex temporary works strategy was designed in collaboration with Conquip and Mabey:
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Conquip designers developed a proprietary modular propping system to brace the NE and NW corners, supporting the contiguous piled wall and enabling adjacent pile cap construction.
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Mabey Propping delivered working designs for additional raking props to the East and West elevations using their Mass 50 system.
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Peri Skydeck was adopted for suspended slabs, while Doka Framax panels were utilised for column and liner wall shutters.
A 3m-deep underpinning solution was delivered beneath a substation wall to transfer foundation support and permit the new structure’s foundations. The underpinning was executed in a hit-and-miss sequence, with excavation supported by proprietary trench box systems and carried out by excavator with reversed buckets.
