Home / Standards / GB/T 28990-2012 GB/T 28990-2012 Active 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 Standard Type GBT ICS 79.010 CCS B69 Status 现行 Issue Date 2012-12-31 Implementation 2013-06-01 Responsible Dept 国家林草局 Drafting Unit N/A