Urbach Tower: Integrative structural design of a lightweight structure made of self-shaped curved cross-laminated timber. Structures, (33):3667--3681, ELSEVIER SCI LTD, October 2021. [PUMA: 2021 CLT Timber aldinger architecture bechert computational connection cross-laminated crossing-screw curved design digital engineering fabrication folded integrative itke knippers lightweight menges self-shaping shell structure surface-active tower urbach wood]