Bristo Square, McEwan Hall
What we did
Bristo Square was designed to give light, open space, with tiered seating steps around the central events area as well as providing improved accessibility and the creation of more social spaces. Helping to soften the cityscape ten semi-mature trees, set in hard landscaping, surround the paved pedestrian area. These also provide much needed shaded areas during the summer months.
Widely used across the country in urban tree planting, Ironside Farrar specified Green-tech’s Geo-Cellular Raft System in order to protect the tree pit soil from compaction. Working together to create a healthy growing space for trees in areas subject to vehicle loadings and trafficking – the Geo-Cellular Raft System combines nutrient-rich Geo-Cellular Raft System soil and exceptionally strong geocellular units. Individual Geo-Cellular Raft System units are locked together to form a raft system within the tree pit. This enable the spread of load from any vehicle movements around the tree’s rooting area, eliminating soil compaction within the pit and creating the growing environment required for the trees to establish and mature.
Green-tech supplied over 200 tonnes of Green-tree Geo-Cellular Raft System topsoil and subsoil in conjunction with Landscaping and Forestry Contractors M W Groundworks. Both of these manufactured soils meet British Standards and are regularly tested to ensure quality of composition and consistency across deliveries.
The gtSleeper and Kerbstone tree anchoring systems, gt RootBarrier and Mona Relief tree irrigation pipes were also supplied by Green-tech.
A well tried and tested system that has been incorporated into many rail, utilities and urban projects throughout the UK has been implemented. Utilising heavy objects such as sleepers and kerbstones to weigh down the tree and act as anchor points is the gtSleeper and Kerbstone Anchoring system. Well compacted subsoil is then placed over the sleepers and the kerbstones to provide added weight and security for the tree.
Helping the trees to establish quickly and remain healthy, especially in the first five years of life, the gtRootBarrier was supplied. This is also used to control and protect the tree roots, whilst also protecting surrounding structures from the root system.
In order to deliver water straight to the tree roots at a consistent level, the Green-tech Mona Relief irrigation system was suppled. Installed with a perforated pipe that surrounds the tree’s root ball this ensures there is never a lack of water at the root ball, which can be detrimental to the lifespan and survival of the tree.
Green-techs Fortress tree grilles were installed into the surrounding paved surface, to give each tree pit a contemporary finish. Enabling paving to be laid almost up to the tree trunk, these heavy-duty urban grilles also protect the tree roots whilst allowing rainwater to percolate through. The Mona irrigation pipes are then finished off to match the Fortress grilles, with the aluminium Piazza filler cap.