China 'GB/T 28990-2012
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 28990-2012
Code for non-destructive evaluation of interior decay and modulus of elasticity of historic building wood members by stress wave methods 古建筑木构件内部腐朽与弹性模量应力波无损检测规程
Issued Date:2012-12-31
Implemented Date:2013-06-01
Issued by:
The Standardization Administration of the People's Republic of China