67th Krynica Scientific Conference was held in Cracow on 11 – 15th September 2022. The conference   was divided into a problem section and a general section. The problem section was entitled ‘Building Life Cycle Modelling’. The general part was devoted to scientific problems of construction engineering. There were the following sessions: construction reliability, concrete structures, geotechnics, underground infrastructure, structural mechanics and engineering of construction projects. Scientists from several Polish universities and scientific institutes participated in the conference.

      Dr hab. inż. Wojciech Sas, prof. SGGW, dr inż. Katarzyna Gabryś and dr inż. Olga Szlachetka were among conference participants.

      The following papers were presented during the session entitled ‘Geotechnics and underground infrastructure’:

 1. Determination of the filtration coefficient in non-cohesive soils using Machine Learning algorithms – presented by mgr inż. Justyna Dzięcioł. Dr hab. inż. Wojciech Sas, prof. SGGW was a co-author.

 2. Influence of the fine fraction of 0.063 mm on the dynamic properties of recycled concrete aggregate – presented by dr inż. Katarzyna Gabryś. Dr hab. inż. Wojciech Sas, prof. SGGW was a co-author.

       The following papers were presented during the session entitled ‘Concrete structures’:

 1. Evaluation of the structure of vapour-permeable membranes before and after destruction – presented by dr inż. Olga Szlachetka and dr hab. inż. Marek Dohojda. Dr inż. Joanna Witkowska – Dobrev was a co-author.

       Dr inż. Katarzyna Gabryś co-chaired the session entitled  ‘Geotechnics and underground infrastructure’.

       Dr inż. Katarzyna Gabryś and dr hab. inż. Wojciech Sas, prof. SGGW also chaired a poster session.