The project has involved substantial earthworks on and around the site and the installation of an extensive site boundary structure. Following a review of retaining wall options, the in-house design and construction team at Thatchers opted for a precast concrete L Wall system. This method of walling using an off-site manufactured precast unit, is a simple and fast process, eliminating the need for shuttering, steel foundation formwork and the pouring of wet concrete.
FP McCann was approached by Somerset-based CRS Building Supplies Ltd to provide a quotation for their 2.5 metres high wall unit, following which an order was placed for 151 individual sections, comprising 147 L Wall straight units, two L Wall corner units and two units with mitred edges.
The site boundary/earth retention walling supplied from FP McCann’s Lydney depot in Gloucestershire has been set out on an in-situ concrete base slab.
Each individual L Wall unit has been dowelled into the slab using steel dowel rods to secure via the holes cored in their toe sections. A construction strength grout has been pumped into each dowel hole for added stability. The key consideration to the Thatchers team selecting the L Walls, was the ease and speed of installation. No propping is required which is a further added benefit of the L Wall system.
Speaking on behalf of CRS Building Supplies, Key Account Manager Lee Russell says, “After quickly familiarising themselves with the anchoring and levelling method, the Thatchers construction team found the walls simple to set down. The FP McCann precast concrete L wall earth retaining units were the ideal solution to this boundary wall project.”