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, 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.