CEN/TC 250/SC 1/WG 2 - Atmospheric icing of structures

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 and similar structures;
-   rope ways (cable railways);
-   structures for ski-lifts;
-   buildings or parts of them exposed to potential icing;
-   special types of structures, such as towers for 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   For wind actions on iced structures, see EN 1991-1-4.
1.2   Assumptions
The assumptions given in EN 1990:2023, 1.2 apply.
EN 1991-1-9 is intended to be used with EN 1990 (all parts), the other parts of EN 1991 and EN 1992 (all parts) to 1999 (all parts) for the design of structures.