Principal Place

Careys were appointed at tender stage to develop the strategy for the construction of the 50-storey Principal Place tower and 4-storey basement. Our in house design team developed a hybrid basement solution using top-down near sensitive assess and to accommodate logistics, and bottom-up basement over the remainder of the site.


Principal Place Construction Ltd.



Principal Contractor


Our in-house design team developed a 3D model at discreate stages of construction and carefully positioned equipment and developed logistics that would to overcome the constraints of the site. A 4D model was then produced to illustrate the proposed build sequence.

All vertical elements of Principal Tower are being constructed using an innovative, self-erecting jump form system, the first of its kind to be used in the UK. The structural columns are being cast within the core jump form, removing this element of works from the floor cycle and leading to a time saving of ten weeks compared to the use of more traditional techniques. CDT were appointed as the Rig Architect involved with the ergonomics, operations and process design. The rig was fully modelled and animated during the design process, and then developed further into animated and pictorial method statements

Virtual Reality:

Our in-house design team worked alongside our civil engineering team at pre-contract stage to develop a strategy that enables the use of a bespoke jump-form system which is used for the first time in Europe. To enable us to understand the logistics on the rig and how this will be operated we decided to use VR technology. This allowed us ‘see’ the system before it was built and make the changes required to ensure its safety and efficiency.

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