Next summer's Commonwealth Games are prompting redevelopment of former industrial and residential sites in host city Manchester.
On one project Geosynthetic firm Tensar supplied its geogrids to build a steep slope next to the City of Manchester Stadium, venue for the event's athletics competitions. After the games, which take place in July and August, the stadium will become the home of Manchester City Football Club.
Main contractor Laing Construction, working for Manchester City Council, had to carry out major earthworks to raise the uneven landscape around the stadium by up to 6m for car parking facilities. This resulted in 70º soil slopes with a face area of nearly 3,000m around the perimeter of the site.
Consulting engineer Arup approached Tensar to provide the geogrid for soil retention. The design solution of a structurally competent reinforced soil block combined Tensar geogrid reinforcement in layers, with galvanised steel mesh panels forming the structural facing.
Behind the steel mesh panelled face, a purpose-made black polyethylene vegetation geotextile retains topsoil and allows hydroseeding to cover the steep face with vegetation for aesthetic and stabilisation purposes.
Specialist sub-contractor Geofirma and PC Construction of Chester built the reinforced soil embankment.