Project case study
Manchester Goods Yard, St John's Quarter
Waterproofing design for the two-storey basement car parking to Block D at St John's, Manchester, on a riverside site with a high water table, achieving Grade 2 performance with Type A and Type B protection.
CLW were commissioned as the waterproofing consultant for the two-storey basement car parking to Block D at St John’s, Manchester. The scope included buried roof and podium deck elements, as the basement extended between several towers and blocks above ground level.
The site sits adjacent to the River Irwell on the former Granada Studios plot, so careful planning of the waterproofing design was required: the water table was high, and the basement had to be designed to allow water to bear against the full height of the retained ground. Working closely with the wider design team, CLW developed a clear and efficient design for the Grade 2 waterproofing, specifying both Type A external membranes and Type B structurally integral protection.
The engineer, Curtins Consulting Engineers, noted that CLW’s support through the concept and design process was comprehensive, reacting positively to the challenges the scheme presented, and that the measured, overarching approach to the design facilitated engagement with the supply chain and design team at the appropriate time to realise the waterproofing solution.
Project credit: Chapman Taylor. Structural engineer: Curtins Consulting Engineers.
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Independent waterproofing design from RIBA Stage 2 through construction monitoring. Defensible, document-led, contractor-agnostic.