Wooden structural elements

This methodology defines the quantities of CO2 obtained from the production of wooden structural elements. In order to obtain a realistic and precise quantification of the CO2 stored in the product, both the emissions resulting from the manufacturing and production processes and those resulting from the transport of the material are removed from the final calculation.

The removal certificates issued are the result of a series of analyzes and checks that a third-party certification body will carry out at companies producing wood-based building elements.
In particular, during the certification audit it will be checked that:

  • the raw materials used come from sustainably managed forests;
  • the CO2 emissions resulting from the production and processing of engineered wood elements intended for construction have been correctly calculated;
  • the emissions resulting from the transport of raw materials from the forest to the production site have been considered;
  • the holder of the removal certificates – the establishment that knows the geometry of the woody element – has demonstrated that the processed material has been used for an engineering work whose nominal life is at least 50 or 100 years as per the applicable calculation codes, thus defining long-term storage.

At the end of this analysis, a buffer is applied, between 10% and 20%, in order to correctly calculate the uncertainty resulting from the long storage of CO2 in the product.