This flexible grid for urban trees prevents the damage to trunks and roots that can occur when a tree outgrows a standard metal grid. In paved urban areas, a metal grid is often placed at the foot of a tree to facilitate the application of water. Such grids can restrict the outward growth of the trunk as the tree ages over a period of many years. Accompany with Tree is a flexible grid that allows the tree trunk to expand unhindered. It is composed of two plates – a lower/outer plate of rolled steel into which a variety of patterns can be cut, and an upper/inner plate of 10mm-thick flexible silicone or rubber. The flexible plate is cut with a radial pattern to create flaps that bend upwards and outwards as the trunk expands. The flaps thus provide a visual reference to growth. The lower steel plate is fixed to the pavement. The upper plate is loosely locked around the trunk like a padlock. The upper flexible plate can be lifted by street cleaners for the removal of rubbish that finds its way beneath.
Design by Lee Chunho, Choi Ujin, Park Youngsu & Lee Junghyun [via]