St. John’s Wood

Hamilton Drive

MAXIMISING THE DEVELOPMENT AREA IS KEY TO THIS PROJECT'S SUCCESS

Hamilton Drive is an impressive residential development scheme in St. John’s Wood in London, which includes the development of 10 high end townhouses. The design includes two levels of basement with gyms and cinemas, as well as a standalone villa with a single story basement and a swimming pool. ByrneLooby was appointed as the structural designer for permanent and temporary works for this project.

To maximise the development area, the basement extends to the site boundary on three sides and requires party wall agreements with multiple neighbours. ByrneLooby designed the basement propping to minimise disruption and minimise the need for underpinning of the existing foundations. To minimise disturbance to the surrounding properties, the sheet pile perimeter basement wall was installed with a Giken silent piling rig.

The original design employed a raft for the foundations with tension piles to resist heave and hydrostatic pressure. With the potential for hydrostatic uplift with a deep basement however, ByrneLooby created an alternative design which showed that, with the introduction of a drainage blanket to reduce hydrostatic uplift and stiffening of the basement box, the tension piles could be eliminated. This redesign achieved significant cost-savings for contractor P J Carey, helping them to win the design and build contract.

STAFF INSIGHT

“As our first collaboration with P J Carey, it was rewarding to work up our alternative design proposal with them to win the project and then see it through to completion.”



Richard, Director
ByrneLooby

 

Project Photos