Two existing retail buildings sit on opposite sides of a gravel car park in Shrewsbury, in England's West Midlands. A new structure will be built on the car park site and the existing buildings knocked through to create a single merged retail development. Our geotechnical and infrastructure teams dealt with some tricky ground conditions involving a steeply sloping site, loose sandy ground and the likelihood of periodic flooding.
Ground level at the rear of the site was much higher than at the front and required cut away to a depth of three storeys. Our geotechnical team carried out extensive site investigations and devised a piled retaining wall to support the cut-away slope.
Work was further complicated by the high probability of periodic flooding in the area. Our solution involved using a concrete frame up to level three, providing both waterproofing and acoustic protection for the leisure facilities slated to occupy this area; the upper levels are steel framed. Our infrastructure team carried out a flood risk analysis and advised on flood mitigation measures including a drainage system designed to cope with high velocity ingress.