Byggnadsindustrin

1.1 Scope of EN 1991-1-5

(1) EN 1991-1-5 gives principles and rules for calculating thermal actions on buildings, bridges and other structures including their structural members. Principles needed for cladding and other attachments of buildings are also provided.

(2) This document describes the changes in the temperature of structural members. Characteristic values of thermal actions are presented for use in the design of structures which are exposed to daily and seasonal climatic changes.

(3) This document also gives principles for changes in the temperature of structural members due to the paving of hot asphalt on bridge decks.

(4) This document also provides principles and rules for thermal actions acting in structures which are mainly a function of their use (e.g. cooling towers, silos, tanks, warm and cold storage facilities, hot and cold services, etc.).

NOTE Supplementary guidance for thermal actions on chimneys is provided in EN 13084-1.

1.2 Assumptions

(1) The assumptions given in EN 1990:2023, 1.2 apply.

(2) EN 1991 1 5 is intended to be used with EN 1990, the other parts of EN 1991 and EN 1992 (all parts) to EN 1999 (all parts) for the design of structures.

(1) EN 1991-1-7 provides actions and rules for safeguarding buildings and civil engineering works against identifiable accidental actions.

NOTE 1 Identifiable accidental actions include impact from vehicles and internal explosions.

NOTE 2 Rules on impact from vehicles travelling on a bridge deck are given in EN 1991-2.

(2) EN 1991-1-7 also covers: actions and rules for tying systems and key members; information on risk assessment; dynamic design for impact; actions for internal explosions; actions from debris.

(3) Actions from ship operations such as berthing and mooring are outside the scope of this document.

(4) Actions due to high explosives that detonate are outside the scope of this document.

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 covers 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 EN 1999 (all parts) for the design of structures.