1.1 Scope of EN 1991-1-9 (1) EN 1991-1-9 gives principles and rules to determine the values of loads due to atmospheric icing to be used for following types of structures: – masts, – towers, – antennas and antenna structures, – cables, stays, guy ropes, etc., – rope ways (cable railways), – structures for ski-lifts, – buildings or parts of them exposed to potential icing, – towers for special types of construction such as for example transmission lines and wind turbines. NOTE Atmospheric icing on electrical overhead lines is covered by EN 50341-1. (2) EN 1991-1-9 specifies values for: – dimensions and weight of accreted ice, – shapes of accreted ice. (3) EN 1991-1-9 cover types of icing, ice loads acting on structures, and falling ice considerations. NOTE Wind actions on iced structures are covered by EN 1991-1-4. 1.2 Assumptions The assumptions given in FprEN 1990:2022, 1.2 apply to EN 1991-1-9.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 10<\/td>\n | 1 Scope 1.1 Scope of EN\u00a0199119 1.2 Assumptions 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 3 Terms, definitions and symbols 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 3.2 Symbols and abbreviations 3.2.1 Latin upper case letters <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 3.2.2 Latin lower case letters 3.2.3 Greek lower-case letters 4 Design situations 5 Classification of actions <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 6 Ice load on structures 6.1 Basic values <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6.2 Ice classes and characteristic values of glaze and rime 6.3 Glaze <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6.4 Rime 6.4.1 General 6.4.2 Rime on single members 6.4.2.1 Slender structural members with width (W)\u00a0\u2264\u00a00,3\u00a0m <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 6.4.2.2 Single members with width (W)\u00a0>\u00a00,3\u00a0m <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 6.4.3 Direction of ice vanes on the structure <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 6.4.4 Rime on lattice structures 6.5 Variation with height above the ground <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 7 Combination of ice loads with other actions 7.1 General <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 7.2 Supplementary provisions for combination of ice and wind actions <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex\u00a0A (informative)Falling ice considerations A.1 Use of this Informative Annex A.2 Scope and field of application A.3 Impact of falling ice <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Annex\u00a0B (informative)Information on how ice loads acts on structures B.1 Use of this Informative Annex B.2 Scope and field of application B.3 General considerations B.4 Glaze on lattice structures <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | B.5 Rime icing on members inclined to the wind direction B.6 Wet snow <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | B.7 Unbalanced ice load <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Annex\u00a0C (informative)Types of icing and data collection C.1 Use of this Informative Annex C.2 Scope and field of application C.3 Icing types <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | C.4 Data Collection <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Annex\u00a0D (informative)Guidance how to use EN\u00a0199119 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" BS EN 1991-1-9. Eurocode 1. Actions on structures – Part 1-9. General actions. Atmospheric icing<\/b><\/p>\n |