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Eurocode Characteristic Properties

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Hello all,

 

I have posted the permissable allowable stresses when designing to british standard below. These are compared to unfactored loading.(Table 8 - BS 5268-2). I have also attached the eurocode characteristic strength table (Table 1 - BS 338)

 

 

As you can see obviously the characterisitc values are higher when comparing to the permissable values in british standard. Well all apart from compression perpindicular to the grain.

 

In BS Compression perpindicular to grain = 2.4N/mm2, In eurocode compression perpindicular to grain = 2.5N/mm2 (For C24 Timber). This does not make sense to me as we are comparing the chaacteristic value to a factored load and applying material factors so why would these 2 values be almost the same. This is a problem when designing stud walls to eurocode.

 

Has anyone any thoughts on this and if their national annex is similar?

 

 

 

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