Point load Actuated Adaptive Gridshells: Methods for initial design and modeling. Proceedings of IASS Annual Symposium 2019 – Structural Membranes 2019 Form and Force, Barcelona, Spain, October 2019. [PUMA: initial modeling bonavia körner method vecvagare knippers shell modelling gridshell point 2019 design grid itke from:petraheim load wood architecture actuated]