Lyons O’Neill are pleased to announce that Carlton Gate has been short-listed in the International Design & Architecture awards in the ‘Overall Development – UK & Europe’.

The client came to us looking for a solution for a two rooftop extension on an existing three storey masonry structure. He was looking to carry out internal structural alterations and minimise the below ground works and carry out the construction without having to carry out foundation enhancements.

Lyons O’Neill investigated the stresses on the building and by reducing the self-weight of the existing structure, maintaining the existing load bearing lines and using a lightweight steel solution for the extension we eliminated the requirement for any underpinning works.

Careful and effective communication of the proposed scheme was required at an early stage to ensure that Building Regulation requirements for disproportionate collapse were met.

Further structural works included a rear extension which required the complete demolition of the rear wall and the removal of alternate load bearing walls throughout the length of the structure. The temporary stability was designed and communicated clearly to the contractor to ensure this was carried out sequentially and the permanent stability was achieved through the installation of a large, three storey sway frame and internal steel frames to support the existing precast concrete floor structure.

Architect	Henley Homes
Contractor	Reis Construct
M&E Engineer	Mendick Waring