Landmark development featuring a multi-screen cinema, eleven glass-fronted shops and restaurants on the ground and first floors, as well as 153 studio, one and two bedroom build-to-rent apartments.

Located opposite the main entrance to The Belfry Shopping Centre, the new development will replace the existing Council Marketfield Road car park and neighbouring shops and offices on the High Street.

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The new development will replace the existing Council Marketfield Road car park and neighbouring shops and offices on the High Street. Jubb have been appointed by the Contractor to provide the structural and civil requirements for the project from the end of RIBA Stage 2 through to completion.

It is thought that the development will take around two-and-a-half years to construct with demolition of the existing buildings starting January 2020 and construction work beginning in earnest in May 2020.

The project was a long time in the pre-construction phase with original plans being discussed in 2016. However, the latest reincarnation involves a Build Over Agreement with Thames Water to enable the proposed development to be constructed over an existing 1070mm diameter Victoria brick egg sewer and a 450mm diameter concrete sewer. The original scheme looked at a diversion to the sewers, but this was going to cost over £1m and would take at least a year to complete. The change to approach has enable the project to proceed.

The Build Over Agreement for the Sewers has been greatly complicated by the close proximity of the basement structure towards the south of the site, the A25 as a major artery through Redhill itself and the challenging ground conditions. The existing brick egg sewer sits within the alluvial sands and gravels, as well as pockets of peat throughout its length as it passes through the site. The site also has a high-water table. As the basement requires de-watering to enable construction this has an adverse impact upon the stability of the sewer during and after the construction process.

Jubb led the negotiations with Thames Water and provided a Ground Movement Assessment for the sewer during the various stages of construction, and after as the ground water and soils recover. The modelling provide through Jubb’s Ground Engineering section has had to reflect the various stages of the construction, and also the particular soil characteristics encountered. Specialist ground investigation was carefully developed, discussed with Thames Water and approved to enable sampling to be undertaken immediately adjacent to the fragile brick sewer. The report provided by Jubb achieved “No Comment” status with Thames Water in July 2020. A structural liner was introduced into the sewer, which has been classified as having Grade 5 damage areas, to help alleviate ongoing damage to the sewer. Careful discussions with Vinci’s temporary works departments and a raft of other specialists was required to enable the final Ground Movement Assessment to satisfy Thames Water and develop methodologies to be used in protecting the fragile Victorian sewer. The solution is a testament to individuals and companies working closely together to achieve a common goal.