BS 3998:1989

Foreword
Committees responsible
Recommendations
1 Scope
2 Definitions
3 General
4 Inspection of trees
5 Legislative controls
6 Tree specialists
7 Safety
8 Season
9 Equipment
10 Instructions prior to carrying out tree work
11 Treatment of wounds
12 Cleaning out
13 Pruning
14 Repair of damaged roots
15 Repair of bark wounds
16 Bracing
17 Decay, cavities and water pockets
18 Irrigation
19 Tree nutrition
20 Tree felling
21 Stump treatment
22 Disposal of arisings
Appendices
A Safety precautions
B Sterilization of tools
C Preparations for wound treatment
D Bracing materials
E Information concerning tree nutrition, techniques
  for improving soil physical conditions, and sources
  of nutrients
F Treatment of tree stumps to prevent regrowth
G Example of a method for protecting a large tree to
  be used as an anchor
Tables
1 Preparations, uses and limitations
2 Galvanized high tensile steel wire ropes
3 Compatible cables, eyebolts and screw eyes
Figures
1 Final cuts
2 Reducing the crown
3 Crown lifting
4 Flexible bracing
5 Through system for cables to be attached to both
  ends of the bolt

This standard covers all aspects of work to be undertaken on trees. It provides recommendations on the process involved in any tree work starting with the assessment and inspection phases before work takes place and covering all of the detailed operations such as pruning, treatment of wounds and crown management.