ÖNORM EN 1991-1-3|Snow loads

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.

This part does not apply for sites at altitudes above 1 500 m, unless otherwise specified. Recommendations for those cases can be found in the National Annexes of EN 1991-1-3, ÖNORM B 1991-1-3.

This standard gives information on design situations and load arrangements to be used for different locations; roof shape coefficients can be found.

For countries in which exceptional snow drifts can be expected, Annex B gives corresponding shape coefficients. This Annex is not applicable for Austria, as there are no such effects.

Annex C of this ÖNORM gives characteristic values of snow load on the ground based on the results of work carried out under a contract specific to this EUROCODE, to DGIII/D3 of the European Commission.

This data is supposed to give information to National Competent Authorities to help them to redraft and update their national maps. Thus it should be ensured that the established harmonised procedures to produce the maps in this Annex are used in the member states for treating their basic snow data.

A redrafted national map will be available in the National Annex ÖNORM B 1991-1-3, which is being elaborated at the Austrian Standards Institute in cooperation with the Central Institute for Meteorology and Geodynamics, Weather Bureau, Innsbruck.

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

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

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;
  • ice loading;
  • lateral loading due to snow (e.g. lateral loads exerted by drifts);
  • snow loads on bridges.

Current document

ÖNORM EN 1991-1-3
EUROCODE 1 - Actions on structures - Part 1-3: General actions - Snow loads

Current status:

ÖNORM

Publication:

2005-11-01

Document superseded:

PRESTANDARD ÖNORM ENV 1991-2-3

More Information & Order:

ÖNORM EN 1991-1-3

National Annex (German only)

ÖNORM B 1991-1-3
Eurocode 1 - Actions on structures - Part 1-3: General actions - Snow loads - National specifications concerning ÖNORM EN 1991-1-3, national comments and national supplements

Current status:

ÖNORM

Publication:

2006-04-01

Document superseded:

Edition: 2005-11-01

National Specifications:

Overview

More Information & Order:

ÖNORM B 1991-1-3

Technical Information (German only)

Wie Schneelasten auf Tragwerke wirken

Electronic Products

Austrian Quick Database - Meteorology and Geodynamics - Snow-, Wind-, Earthquake and Temperature actions