One could argue full-scale experiments on fire phenomena are the most enriching for our knowledge as the fire community. The costs associated with them and logistical nightmares of organizing them make them an uncommon sight. However, in an instance where we reach the boundaries of our knowledge, they are necessary to progress further. That was the case of the research programme carried out by the OFR, in the umbrella of Structural Timber Association Special Interest Group (SIG) - CLT co...