Steel Staircase for WeWork, Blackfriars Bridge, London

LSJ was appointed by LTB to design a basement-to-ground-floor steel staircase at a new WeWork office just south of Blackfriars Bridge, London.

  • Client: LTB
  • Structural detail by: Mark Ebbs
  • Job Date: December 2020

The staircase needed to span over 9 metres, without support posts. This would normally be achieved by using an off-the-shelf structural steel section such as channel or box section, but in this case the stringer had to look as slim as possible. Furthermore, it could be no wider than the balustrade bolted to it. We achieved the desired specifications by fabricating a hollow box section from 15mm plates, welded together to make a section size of 400mm x 75mm. The plates were fully welded together to give the strength required, and the welds were ground flat to achieve a clean look.

To allow delivery, each stringer was made in two sections and spliced back together on site before erecting. Here is the staircase in our workshop:

Each stringer, once assembled, weighed over 800kgs! We took great care to avoid damaging the finishes. The stringers were erected using Roustabout lifting gear.

The balustrade is bolted directly to the top of each stringer and needed to fit perfectly, so we assembled the stair and made the balustrades on the stringers at our workshop. Then we dismantled it all and sent it to be powder coated by Mulberry and Pier.

Along with a raised floor area and ramp balustrade on the ground floor in the same style, the works were delivered and completed in plenty of time before handover. There was also minimal touching up of the paintwork!

What do you think of the finished staircase? We’re really pleased with it.

Are you interested in commissioning a steel staircase from LSJ Engineering?

We are open for commercial steel work! Get in touch with our team here, email or call 01702 290 585. We look forward to hearing from you! You can view write ups of our other staircase projects here.

Published by LSJ Engineering

LSJ Engineering provides premium structural steel, architectural steel and staircases for businesses in Essex, London and the South East, from our base in Shoeburyness.

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