RT Journal Article
T1 Inexpensive photogrammetry applied to displacement measurement of a gridshell
A1 Ortiz Sanz, Juan
A1 Gil Docampo, María de la Luz
A1 Bastos Costas, Guillermo
K1 Gridshell
K1 Photogrammetry
K1 Timber
K1 Metric quality
K1 3D model
AB Gridshells are unexploited structures, over which lengths measurement are difficult to do due to their size and complex curvature. To deformation measurement on a timber gridshell beam and on an entire gridshell, we used an affordable photogrammetry system that consisted of a consumer-level camera, a tripod, a mast with a gimbal to elevate the camera, a laptop, and two photogrammetric software: PhotoModeler Scanner and Metashape. The beam was subjected to a bending test, and the gridshell was loaded with 105 kg of dead load per node on its five central nodes. The maximum error in the measurement was 1.26 mm on the beam and 3.45 mm on the gridshell, which corresponded to 0.77 ‰ error relative to the span of the beam and 0.41 ‰ relative to the length of the gridshell. Three-dimensional models obtained through the proposed method serve as dimensional data with a uniform error around the object
PB Elsevier
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29085
UL http://hdl.handle.net/10347/29085
LA eng
NO Measurement 198 (2022) 111365
NO The present work was developed in the framework of the research project “Ecological cellular structural systems for a building model for climate change mitigation and forest value enhancement” (EcoTimberCell) (2017-PI177) Ref.LIFE17 CCM/ES/000074. In addition, it is linked to the Aids for consolidation and structuring of competitive research units in the universities of the Galician University System Ref.ED431B 2020/25
DS Minerva
RD 27 abr 2026