The second edition of the BT-Bundle was compiled by the 27th Board of Praktijkvereniging BouT, the study association of the MSc Building Technology Track at the Faculty of Architecture, TU Delft. The BT Bundle showcases the thesis’ made by our graduates. This bundle includes work from students who completed their thesis between July 2021 and September 2021. As the interests and field of Building Technology expands, the interdisciplinary topics that students focus on also evolve. This foreshadows how the disciplines of BT are changing through technology and the demands of the built environment. We would like to thank all the students who voluntarily took the time to create their contributions and for trusting their work in our hands. We hope that everyone who is reading this will gain more insight and be inspired by how Building Technology shapes our built environment.