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prEN 1991-1-9

Eurocode 1 - Actions on structures - Part 1-9: General actions - Atmospheric icing

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Draft
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prEN 1991-1-9
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prEN 1991-1-9
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.
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