There are good engineering solutions to the disruption of footpaths and roads….it is simply that Amey are not using them!!
Technotronic just sent in a really pertinent comment, so I repeat the information verbatim:
Letter to THE STAR
The letter below arrived in my inbox on Sunday 24th July, 2016. The author sent it to The Star newspaper the same day. However, it remains unpublished. The author has given permission for me to share it here (below).
“Over several months, the Council have repeatedly, falsely claimed to have used Flexi®-Pave to retain healthy, structurally sound, mature highway trees. Flexi®-Pave is a product that can be used when resurfacing footways, as an alternative to tarmac. The key benefit is that when tree parts thicken – as they do each year – the product flexes rather than cracks, unlike tarmac. For this reason, it has been widely used elsewhere in other cities, to retain mature highway trees. A letter appeared in last Thursday’s Sheffield Telegraph, written by someone claiming to be an “independent arboriculturist”. I believe he is a sub-contractor on the city-wide, £2.2bn Streets Ahead highway maintenance project, working for the main contractor: Amey.
I was shocked and appalled by the implication that the slightest wound on a tree would be likely to result in “rapid decline” of the tree. For a tree, its bark is like skin; the wood is like flesh. Just like an animal, if wounded, in theory, the organism can become infected and a disease could result that could lead to death. However, like animals, plants have evolved ways of resisting infection and limiting its spread. They have also evolved ways of compensating for any decay, by reducing crown size and, through incremental growth, adding layers of biomechanically optimised wood, known as reaction wood. This strengthens affected regions and can compensate for cross-sectional loss; it is what enables plant parts to have a safety factor greater than that of most mammal bones. It is why you see many trees with large wounds or cavities (great for wildlife) and yet they remain perfectly healthy and their parts do not fail. It is why trees can receive multiple wounds when pruned, attacked by herbivores, otherwise damaged, and remain strong, healthy and safe.
Most people involved with tree care in Sheffield do not fulfil the British Standard requirements necessary to qualify as competent arboriculturists. An arboriculturist is defined (by BS 5837) as: “person who has, through relevant education, training and experience, gained expertise in the field of trees in relation to construction”. Only a small handful of people in Sheffield meet these criteria. An education and training deficit leads to misunderstanding and inappropriate comments, as well as bad policy and bad decisions that are not soundly based on available evidence, but: “unduly influenced by transitory or exaggerated opinions, whether formed by the media or vested interests.”
Provided Streets Ahead contractors comply with the current, widely accepted, nationally recognised good practice guidance and recommendations that they claim to comply with and aim to “build on” (e.g. BS5837 and guidance published by the National Joint Utilities Group and Trees & Design Action Group), there is no reason why mature highway trees cannot be safely retained, long-term, by use of products like Flexi®-Pave. Provided resurfacing works are adequately supervised on site by competent arboriculturists, and compliance with current good practice is specified, and adequately supervised & enforced, there is no “gamble” with public resources.
The Council & Amey repeatedly state that felling is a “last resort” and that they are willing to consider all other options to retain mature highway trees. However, on 19/2/2016, the Information Commissioner completed an investigation (Case Ref: FS50596905) which revealed that, over 3yrs in to the £2.2bn city-wide Streets Ahead project, neither Amey or the Council had ever commissioned or draughted any alternative highway engineering specifications for footway, edging (kerb) or drain construction for consideration as an alternative to felling, as a means to enable the safe long-term retention of valuable mature highway trees, and the range of valuable ecosystem service benefits they afford to the environment and communities each year. This revelation confirmed that felling is certainly not the “last resort” and that the Streets Ahead team have a long way to go before they can rightfully claim to comply with current good practice.
D.Long (BSc Hons Arb), Sheffield.
MY COMMENT: It still feels like nobody is listening – Amey & Sheffield City Council: ‘……….. is anybody out there??!’