Battery Retail Park
What we did
The project comprised of nearly forty tree pits over two phases between 2018 and 2020. The first phase was contracted to Bernhards Landscapes of Warwickshire, and the second to McPhillips (Wellington) of Shropshire; both of which Green-tech has worked with for around fifteen years.
The tree pits were set into soft central reservations around the main car parking area, although to get the required rooting volume to ensure healthy establishment and future growth, the tree pits extended out under the parking bays to some extent.
Green-tech has been manufacturing its range of Green-tree soil for nearly twenty years, and over 400 tonnes of clean, manufactured Topsoil, and subsoil was supplied for the tree pits. In order to use a nice friable, organic topsoil underneath the paving, the contractors opted for Green-tech’s Geo-Cellular Raft System tree pit support system, rather than a traditional, plastic-heavy, deep-pit system.
The Geo-Cellular Raft System acts as a sub-base replacement, supporting the paving above, pedestrian, or vehicular, whilst protecting the soft soil below from risk of compaction. It has three big advantages over traditional deep-pit crate systems. Firstly – it sits over the top of the tree pit, taking its structural support from a 500mm wide ledge cut into the surrounding formation ground, meaning there is no plastic whatsoever in the actual rooting area of the tree pit. Secondly – its shallow profile, just 150mm deep means that there is rarely any conflict with underground services, it isn’t deep enough. And third – Geo-Cellular Raft System uses less than a third of the plastic of traditional crate-style tree pit systems, so it’s better for the budget and the environment.
Each tree pit also contains a strap anchor to keep the trees stable during the all-important establishment phase, along with a mona irrigation rings. In this instance, to provide even more protection from the risk of vehicular damage, the trees were also stabilised with double-staking, cross-bar, and soft rubber ties.