Tree Surveys - Premier Tree Services
Predevelopment Tree Surveys - BS 5837
Trees can be damaged on construction sites by a number of means.
- Physical damage - Physical damage to the upper part of the tree caused by machinery damaging the bark and breaking branches. This will almost always lead to permanent damage to the tree and can often be fatal.
- Root Damage Severance - Trees are also damaged when root systems are not properly protected. Digging and trenching which are necessary to construct a building can have catastrophic implications to trees health and stability. 90% of the tree feeding roots (fine roots that absorb water and minerals) are located within the top 6" - 12" of soil. For this reason Tunnelling or hand digging is recommended if utilities are to be placed within the vicinity of the tree.
- Compaction - Compaction of soil caused by heavy machinery and storing of building materials around the tree reduces the amount of pore space within the soil. This not only inhibits root penetration and growth but also decreases the amount of oxygen required for healthy growth and function of the roots.
- Soil piling - Piling soil over roots during construction or landscaping will also have an adverse effect on the trees ability to absorb water and nutrients. Only a few extra inches of soil can prevent water getting to the feeding roots in the upper part of the root system. This will often lead to drought symptoms like dieback in the upper crown becoming evident.
When preparing reports for trees on development sites Premier Tree Services follow the guidelines set out in British Standards 5837: 1991 Trees in relation to Construction. (Soon to be updated. Draft document out for consultation). The report will identify trees which are suitable for retention / removal, give recommendations for any remedial works which may be required to trees that are to be retained and also give safe protection zones for the trees. We can also act as intermediaries during planning and development, liaising with the local authority planning department, architects and sub-contractors if required. Premier Tree Services can also make interval site visits during construction to ensure standards are being met.
Computerised Tree Surveys
Tree surveys are undertaken to record significant data about large numbers of trees or groups of trees. They are usually tailored to suit the needs of the client and often include tree height, age class, defects and recommendations for work required. A health and safety assessment is also provided. Trees can be located onto maps for future reference and easy on site identification.
Premier Tree Services are able to offer computerised tree surveying and management as part of its services. This includes easily uploadable data; health and safety assessments and trees can be located using the Global Positioning System GPS.
For more information on predevelopment tree surveys and computerised tree surveys contact Premier Tree Surveys.