Curtain Walling: Resistance to snow load

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Categories: Performance : Curtain Walling


The curtain wall shall have sufficient strength to resist any snow load and shall have sufficient stiffness to ensure the serviceability of the wall.

Resistance to snow load is determined by calculation of deflections and strength of the framing members. Calculation is based on the approriate Eurocode for the framing material.

Snow loads should be considered in conjunction with other loads. Guidance on load combinations to be considered is given in CWCT SSBE and CWCT TU14 Load combinations.


EN1991-1-4Eurocode 1 - Basis of design and actions on structures - Part 1-4: Actions on structures - wind loads
EN1993-1-1Eurocode 3 - Design of steel structures
EN1995-1-1Eurocode 5 - Design of timber structures
EN1999-1-1Eurocode 9 - Design of aluminium alloy structures. Part 1-1: General structural rules
CWCT TU14Load combinations


Method of test

There is no method of test


There is no classification for resistance to snow load. The safe snow load resistance, calculated in accordance with the relevant Eurocode, is declared on the CE Mark in units of kN/m2.

CE Marking

UK Regulations require a building to be structurally safe:

Locationnpd allowed
England and WalesNo
Northern IrelandNo