AS/NZS 1170.3:2003 (R2016) PDF Download

AS/NZS 1170.3:2003 (R2016) is a standard that provides procedures for determining snow actions on roofs and ice actions in the structural design of structures. It is meant to be used in conjunction with AS/NZS 1170.0. The principles outlined in this standard are generally applicable to all types of structures.

However, there are certain exclusions in this standard. It does not cover the impact that may result from snow or ice sliding off or falling from a higher roof. It also does not address the actions that could occur if snow and ice block drainage systems or the actions resulting from snow and ice on bridges. Additionally, it does not consider the additional wind loads that may result from changes in the shape or size of the building structure due to the presence of snow or ice.

This standard is not applicable to sites where snow is present year-round or at altitudes above 1800 m in New Zealand. It does not address lateral loading on structures caused by snow on the ground, such as lateral loads exerted by drifts. The vulnerability of a site to avalanche, avalanche blast, and landslide is also not considered. Furthermore, the increase in load due to heavy rain falling on snow and possible changes to snow loads due to future climatic changes are not covered by this standard.