Office Building for Legalease, Fleet St, London

We were commissioned by Leaglease to add lift shafts, stairs and an extra floor to their building in Fleet St, London.

  • Client: Legalease
  • Structural detail by: Mark Ebbs & Mick Simpson
  • Job Duration: 2016-2017 (18 months)

Space to develop in London is rare, so it is becoming increasingly common to extend upwards rather than sideways. Our project in Fleet St was, therefore, far from unique – apart from the location and logistics.

We were working directly for the building’s owner rather than a large construction company. When we won the contract to build a steel framed single story extension on the roof, therefore, we were also asked to work out how to get the steel work up there and erect it in order to successfully add another floor to the building.

The solution was to site a mobile tower crane in Fleet St over several weekends and carry out the works as quickly as possible. As you can imagine, the process involved in closing such a busy London thoroughfare is not an easy one! There was considerable traffic management involved and bus diversions to arrange. We contracted City Lifting who supplied the crane and arranged everything else with the council directly. We completed the works over three weekends.

Are you interested in commissioning a construction project from LSJ Engineering?

We are open for commercial steel work! If you liked the work we did for Legalease, get in touch here, email info@lsjeng.co.uk or call 01702 290 585. You can find more of our structural steel work projects here.

New Build for Capel Manor School, Enfield, London

T&B Contractors commissioned LSJ Engineering to construct a new build for Capel Manor School in Enfield.

This was a new build structure of around 40 tonnes. That’s fairly lightweight for a building of this size and only a single story. That said, the structure was complicated by having a double pitched roof and being curved on plan.

Our Tekla 3D modelling and drawing software allows our team to detail structures with great accuracy. We can order curved sections to be made exactly as required from CNC files, making fabrication quicker and ensuring the final site erection goes very smoothly.

Accurate setting out and installation of the column holding down bolts is critical – especially so with a structure this complex! Again, our drawing software ties this process into the design from the start and we are able to issue very good setting out information to the groundworks contractor.

Here are some of the construction photos! Not a bad view…

Are you interested in commissioning a construction project from LSJ Engineering?

Do you like the look of the work we did at Capel Manor School? Our team is available for commercial steel work projects. To learn more, get in touch here, email info@lsjeng.co.uk or call 01702 290 585. You can find more of our structural steel work projects here.

Vertical Extension at Cowcross St, London

LSJ Engineering was commissioned by Stoneforce to build a vertical extension in Cowcross Street, London, in 2018.

  • Client: Stoneforce
  • Structural detail by: Mark Ebbs
  • Job Duration: September 2018-January 2020

This was another vertical extension, in Farringdon, central London.

We supplied and erected a two story extension on top of a building already three stories high. As the building had to have its roof removed to do the works, the main contractor had to put a full scaffold lid on it. This made erecting the frame with a mobile crane very difficult!

Instead, we were provided with a hoist to get all the steel sections to roof level. We erected the frame using Genie lifts and gantry frames for the heavier sections.

On the same contract, we supplied and fitted an unusual cantilevered staircase from the basement level to ground floor.

The stair flight was formed of continuous 20mm steel plate treads and risers with non-slip nosing strip slots milled into the treads.

The whole stair cantilevered off a concrete wall. A stud wall was built a few inches in front of it to hide the fixing points, and the treads and risers were fully welded together.

As there was some welding and grinding involved in the fitting process, the stair was painted on site.

Are you interested in commissioning steel work from LSJ Engineering?

We are open for commercial steel work! If you like the look of the work we did at Cowcross Street and want to know more, we’d love to hear from you. Get in touch here, email info@lsjeng.co.uk or call 01702 290 585. You can view write ups of our other staircase projects here, and our structural steel work projects (including more vertical extensions!) here.