CEN - EN 1991-1-3
Eurocode 1 - Actions on structures - Part 1-3: General actions - Snow loads
|Publication Date:||1 July 2003|
|ICS Code (Technical aspects):||91.010.30|
(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.