FOREWORD
INTRODUCTION
Clause
1 General
1.1 Scope and object
1.2 Terms and definitions
2 Classification of structures
2.1 Common structures
2.2 Special structures
3 Lightning parameters
3.1 Lightning current parameters used for dimensioning Lightning
Protection Systems (LPS)
3.2 Lightning ground flash density
4 Selection of protection levels for Lightning Protection Systems (LPS)
4.1 Accepted frequency of lightning flashes (N[c]) to a structure
4.2 Expected frequency (N[d]) of direct lightning flashes to a
structure
4.3 Procedure for selection of LPS
Figures
Annex A - Basic values of lightning current parameters - Cumulative
frequency distribution