BS 5837:2005
$189.07
Trees in relation to construction. Recommendations
| Published By | Publication Date | Number of Pages |
| BSI | 2005 | 38 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 5 | 1 Scope 2 Terms and definitions arboriculturist competent person structure veteran tree root protection area (RPA) tree constraints plan (TCP) |
| 6 | construction exclusion zone tree protection plan (TPP) arboricultural implications assessment (AIA) arboricultural method statement (AMS) services special engineering 3 Strategy 3.1 General 3.2 Implementation |
| 7 | Flow diagram, summarizing planning for trees on development sites |
| 8 | 4 Surveys 4.1 Land survey 4.2 Tree survey |
| 9 | 4.3 Tree categorization method |
| 10 | Cascade chart for tree quality assessment |
| 11 | 4.4 Additional considerations |
| 12 | 4.5 Tree survey – post-planning 5 Tree constraints plan 5.1 General 5.2 Root protection area (RPA) Calculating the RPA |
| 13 | 5.3 Above ground constraints 6 Arboricultural implications assessment (AIA) and design issues 6.1 General 6.2 Tree constraints and design |
| 14 | 6.3 Proximity of trees to structures |
| 15 | 7 Arboricultural method statements (AMS) and the tree protection plan (TPP) 7.1 Once the layout proposals have been finalized a TPP should be prepared containing the following information: 7.2 In order to avoid disturbance to the physical protection forming the construction exclusion zone once it is installed, it is… |
| 16 | 8 Pre development tree work 8.1 General 8.2 Working within the RPA 9 The construction exclusion zone: barriers and ground protection 9.1 General 9.2 Barriers |
| 17 | 9.3 Ground protection Protective barrier |
| 18 | Scaffolding within the RPA 9.4 Additional precautions outside the exclusion zone |
| 19 | 10 Avoiding damage to structures by trees 10.1 General 10.2 Direct damage by trees to structures |
| 20 | Minimum distance (m) between young trees or new planting and structure to avoid direct damage to a structure from future tree growth 10.3 Indirect damage by trees to structures 11 Demolition and construction in proximity to existing trees 11.1 General 11.2 Requirements for tree protection during demolition |
| 21 | 11.3 Principles for avoiding tree root damage during construction |
| 22 | 11.4 Provision for water and oxygen 11.5 Allowance for future growth 11.6 Foundations within the RPA 11.7 Underground and above ground services |
| 23 | Trenching along radii to minimize damage 11.8 Low-invasive vehicular access in proximity to trees 11.9 Types of hard surface and their suitability in proximity to trees |
| 24 | 11.10 Edge supports 12 Soft surfaces around trees 12.1 General considerations 12.2 Prevention of damage |
| 25 | 12.3 Avoidance and remediation of compaction 12.4 Herbicides 12.5 Planting and ground cover 12.6 Use of mulch |
| 26 | 13 Design considerations for new planting 13.1 General 13.2 Planting adjacent to buildings 13.3 Planting adjacent to roads 13.4 Planting in the vicinity of services |
| 27 | 14 Ground works and preparation for new planting 14.1 Drainage 14.2 Soil conditions 14.3 Surfaces around newly planted trees |
| 28 | 15 Post development management 15.1 Existing trees 15.2 New plantings |
| 29 | (informative) Trees and the law (informative) Trees and the law General Legal protection for trees The Town and Country Planning Act 1990 (as amended) [1] requires that, except in certain circumstances, “no work shall be carrie… Tree preservation orders allow for trees to be protected either as individuals, groups, areas or woodlands. The orders have the … Even when no specific legal protection exists, it may be necessary to obtain a felling licence. These apply if the volume of tim… Wildlife and habitat considerations Para. 47 of Planning Policy Guidance Note 9: Nature Conservation [18] states that “the presence of a protected species is a mate… The protection afforded to bats makes it illegal to intentionally injure or kill a bat, or to damage, disturb or obstruct access… Legal protection for trees on development sites Section 197 of the Town and Country Planning Act 1990 [1] states “it shall be the duty of the local planning authority to ensure… |
| 30 | It is usually appropriate for a tree preservation order to be placed on trees that are an amenity and structurally sound. The ef… Where a tree preservation order exists prior to planning permission being granted it should not normally be a block to effective… When planning permission is granted, planning conditions may be imposed to provide for the erection of protective fencing (see Clause 9) and other measures for ensuring the well-being of trees during development. Where circumstances require it, local authorities should apply a planning condition requiring the developer to appoint an arbori… The consent of the local authority is not needed to carry out work on trees required to enable a person to implement a planning … Enforcement of protection during development Common law claims and litigation concerning trees |
| 31 | (informative) Useful contacts (informative) Useful contacts |
| 33 | (informative) Damage to trees (informative) Damage to trees General Trees that have good health and stability are well adapted to their surroundings. Any development activity which affects the ada… The part of a tree most susceptible to damage is the root system, which, because it is not immediately visible, is frequently ig… Damage to the stem and branches of a tree is not usually sufficient to kill the tree directly but may make it unsafe by affecting the weight of distribution of the crown or by facilitating decay in the long term. Such damage may also be disfiguring. Extent and form of the root system The root system is typically concentrated within the uppermost 600 mm of the soil, although it may be deeper within the dense ma… The root system does not generally show the symmetry seen in the branch system. The development of all roots is influenced by th… The uptake of water and mineral nutrients by the root system takes place via the fine roots, typically less than 0.5 mm diameter… All parts of the root system, but especially the fine roots, are vulnerable to damage. Once roots are damaged, water and nutrien… |
| 34 | (informative) Example tree survey pro forma (informative) Example tree survey pro forma |
