Royal Brompton Hospital: Case Study Transcript

We have three levels of props installed on the Royal Brompton Hospital project.
The first level of propping is installed off of the capping beam at level one.

Moving down to level two, we have a hydraulic Conquip propping system in place.
First of all, we installed the gallows brackets to the cofferdam wall, followed by the installation of the waling beam, which then allowed us to assemble and install the Conquip props.

Kier, J P Dunn, and Conquip have been working collaboratively to ensure the props have been assembled and pressurised in line with the design requirements of the cofferdam.
J P Dunn’s involvement in the project is to design and install all temporary works with the help of partners, then to reduce dig down to B2 level, which is approximately 10 metres below ground level.

After that, we’ll bring up the RC frame.
The RC frame goes two floors above ground.

With regards to the temporary works designed for this project, the temporary works engineer designed the gantry, plunge columns, and grillage for the crane.
The main temporary works is by Conquip.
They’ve installed all the braces and waling beams.
They work really well and efficiently.

We’ve managed to get the props in two weeks ahead of programme.
Communicating with Conquip and the structural temporary works engineers was pretty effortless because they were both flexible time-wise and would come to site meetings at the drop of a hat for us.

As we’ve gone on to installation, Conquip again worked very well with us when we came up against issues.
The two changes we had here, which were due to sheet pile movement, within a day they had turned around additional sections and additional pieces which they had to manufacture, and they had them on site probably within 48 hours — as if nothing had happened.