Up until now I have been using the "allowable" stress values shown in the NDS tables included in the Timber Frame Design book in my structural models.
I note that the values shown, for example, ultimate horizontal shear in the Wood Handbook are between 10 to 20 times higher.
I am currently working with a client who is required to use limit state analysis and this seems to permit allowable stresses to rise higher than NDS allowable.
Can anybody shed some light on this please ?
Ken Hume http://www.clik.to/WorldofWood