Our regular client GPF Lewis appointed us the main contractor for a building refurbishment in Princes St, W1, London (you can see our other work for GPF Lewis here!).
The Project
- Client: GPF Lewis
- Job duration: December 2022- spring 2024
This is a very complicated job. The main part of the refurbishment is a structural steel vertical extension which forms a new 5th floor level and a roof over. There’s an additional rear extension, which fills an existing lightwell from the basement to the new roof level.
The drawings for this job were produced by DMR Structural Ltd:
Some of the new 5th floor and roof beams weigh over 2 tonnes. Due to a temporary roof on over 75% of the roof area, the only way to get the roof beams to the new levels was by lifting them in spliced sections. We achieved this by using a mobile crane to lift the beams onto a specially built scaffold deck at the rear of the property, then moving the beams on trolleys to their correct positions so we could lift them into place using gantry A frames and Genie lifts. That’s a lot of steps to ensure safe lifting of very heavy roof beams! GPF Lewis arranged for several weekend road closures in order to set up a 130 tonne mobile crane, which then lifted the new steelwork to the rear deck.
You can see the scale of the project from the photos. Note: you can click to enlarge the images.
Furthermore, we designed and installed secondary steelwork to the rear elevation to support the new window and cladding systems.
Our team was also appointed to design and install the new staircases and balustrades from basement to roof deck level, which is ongoing. We expect our works to be completed by spring 2024. We’re really pleased with how this refurbishment is going!
Are you interested in commissioning steel work from LSJ Engineering?
We are open for steel work projects! Get in touch here or email info@lsjeng.co.uk. Alternatively, phone 01702 290 585. Find more of our structural steel work projects, including other vertical extensions, here. We look forward to hearing from you.