Project

St John Bosco College

Early stage optioneering delivers programme and sustainability savings

St John Bosco College is a seven-form entry secondary school built on a constrained site in Battersea, London. The school is part of a wider masterplan that includes a Salesian monastery and residential development.

At the early pre-planning stage Walsh developed a number of structural solutions for the school including traditional reinforced concrete, post-tensioned concrete, steel and metal deck and the final solution steel and precast.

The steel and precast solution allowed for long spans and column-free classrooms. The precast slab reduced the weight of the structure, reducing foundation costs and concrete wagon deliveries on the confined site.

A combined structural and services strategy was developed to minimise the building height. Slimflor beams were used within corridors to facilitate service distribution with smaller services penetrating downstand beams in teaching spaces.

Long spans over the large assembly halls were achieved using storey-high trusses hidden within upper floor walls and a naturally ventilated first floor sports hall was constructed using cellular beams.

The amount of off-site fabrication provided significant programme savings and resulted in a more sustainable solution than a traditional reinforced concrete design.

Client 
  • Lendlease
Architect 
  • AHMM
Sectors 
Location 
  • Battersea
  • London

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Taking Sustainability Seriously

Sustainability is in our DNA and we have our own ambitious goals to achieve Net Zero as a business and with our designs. With innovative in-house monitoring tools, Walsh clients have seen on average reductions of 10-20% total embodied carbon, with some of our flagship work achieving 60-70% reductions compared with baseline figures.