At the 2021 Annual Symposium, the Tsuboi Award for the best paper in the Journal of the IASS in 2020 was conferred to:

Ch. Robeller and N. von Haaren (Germany): "Recycleshell: Wood-only Shell Structures Made From Cross-Laminated Timber (CLT) Production Waste," J. IASS, Vol. 61 (2020) No. 2, n. 204 June, pp. 125-138.

There was only one award for 2020, because the Symposium award was not conferred since the 2020 symposium was postponed until 2021 due to the Covid-19 pandemic.