scope:

(1) EN 1991-1-3 gives guidance to determine the values of loads due to snow to be used for the structural design of buildings and civil engineering works.

(2) This Part does not a pply f or s ites at a ltitudes above 1 500 m, unless otherwise specified. NOTE: Advice for the treatment of snow loads for altitudes above 1 500 m may be found in the National Annex.

(3) Annex A gives information on design s ituations a nd l oad arrangements to be used for different locations.

NOTE: These different locations may be identified by the National Annex.

(4) Annex B g ives s hape c oefficients t o be used for the treatment of exceptional snow drifts.

NOTE: The use of Annex B is allowed through the National Annex.

(5) Annex C gives characteristic values of snow load on the ground based on the results of w ork carried out under a contract specific to this Eurocode, to DGIII / D3 of the European Commission. The objectives of this Annex are:

- to give information to National Competent Authorities to help them to redraft and update their national maps;

- to help to ensure that the established harmonised procedures used to produce the maps in this Annex are used in the member states for treating their basic snow data.

(6) Annex D gives guidance for adjusting the ground snow loads according to the return period.

(7) Annex E gives information on the bulk weight density of snow.

(8) This Part does not give guidance on specialist aspects of snow loading, for example:

- impact snow loads resulting from snow sliding off or falling from a higher roof;

- the additional wind loads which could result from changes in shape or size of the construction works due to the presence of snow or the accretion of ice;

- loads in areas where snow is present all year round;

- ice loading;

- lateral loading due to snow (e.g. lateral loads exerted by drifts);

- snow loads on bridges.