HANDBOOK – PRESERVATION OF WOODEN POLES CARRYING OVERHEAD TELECOMMUNICATION LINES – 2009
FOREWORD
TABLE OF CONTENTS
CHAPTER 1 – GENERAL CONSIDERATIONS
1.1 Purpose of this publication
1.2 Basic concepts
1.2.1 Regional character of preservation problems
1.2.2 Species used for poles
1.2.3 Destructive agents
1.2.4 Climatic conditions
1.2.5 Customers of the wood-preserving industry
1.2.6 Statistics and controls
CHAPTER 2 – PRESERVATION OF POLES
2.1 Length of life of impregnated poles
2.2 Practices and experience in various countries
2.2.1 Additional remarks on Table 1
CHAPTER 3 – PRESERVING SUBSTANCES
3.1 Types of preservative and general remarks
3.2 Oily preservatives
3.2.1 Creosotes
3.2.2 Reinforced creosote
3.3 Single water-borne substances
3.3.1 Copper sulphate
3.4 Combinations of water-borne substances
CHAPTER 4 –PRESERVATION PROCESSES
4.1 General
4.2 Methods of treatment
4.2.1 Vacuum-pressure processes
4.3 Diffusion processes
ANNEX A – Chief water-borne copper-mixture preservatives used to impregnate poles
ANNEX B – Organizations carrying out research and tests on pole preservation
ANNEX C – Questionnaire on impregnation of wooden poles
Bibliography