China releases new timber design standard

Wednesday 7 Feb 2018

China releases new national standard for timber structure design - China has released a new design code for timber structure, which encourages industry to expand the use of wood and improve the grading system of wood strength.

The new standard, which numbered as GB50005-2017, will come into effect on August 1 this year, according to the Ministry of Housing and Urban and Rural construction. Several items* in the new standard are now compulsory and should be strictly implemented into practice, according to the ministry.

The new version has highlighted contents about the grading system of wood strength and its design specifications. It also pledges to improve the design criteria for glued timber structure and light wood structure.

The key points amended in the new version are:
  • To increase the use of domestic wood species and imported wood species;
  • To conduct research and confirm on the design value of imported wood products;
  • Make additional design requirements on structure composite materials and engineered wood products;
  • To carry out comprehensive research and unify the calculation requirement of wood structure components and connectors;
  • Improve the design criteria for glued timber structure and light wood structure;
  • Improve the regulation on seismic design and structure requirement;
  • Coordinate and improve requirements on fire-protection design and structure requirements;
  • Improve requirements on durability design and structure requirements;

* Note - Compulsory items in the new standard include items 3.1.3, 3.1.12, 4.1.6, 4.1.14, 4.3.4, 4.3.6, 7.4.11, 7.7.1, and 11.2.9.


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