The Effect of Hygroscopic Design Parameters on the Programmability of Laminated Wood Composites for Adaptive Façades

  • Sherif AbdelmohsenEmail author
  • Passaint Massoud
  • Rana El-Dabaa
  • Aly Ibrahim
  • Tasbeh Mokbel
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 1028)


Typical adaptive façades respond to external conditions to enhance indoor spaces based on complex mechanical actuators and programmable functions. Hygroscopic embedded properties of wood, as low-cost low-tech programmable material, have been utilized to induce passive motion mechanisms. Wood as anisotropic material allows for different passive programmable motion configurations that relies on several hygroscopic design parameters. This paper explores the effect of these parameters on programmability of laminated wood composites through physical experiments in controlled humidity environment. The paper studies variety of laminated configurations involving different grain orientations, and their effect on maximum angle of deflection and its durability. Angle of deflection is measured using image analysis software that is used for continuous tracking of deflection in relation to time. Durability is studied as the number of complete programmable cycles that wood could withstand before reaching point of failure. Results revealed that samples with highest deflection angle have least programmability durability.


Wood Hygroscopic design Lamination Deflection Durability Adaptive façades 



The authors are grateful to the Bartlett Fund for Science and Engineering Research Collaboration in supporting the ‘Soft Adaptive Building Skins for Energy-Efficient Architecture’ research project.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of ArchitectureAmerican University in CairoCairoEgypt
  2. 2.Department of ArchitectureAin Shams UniversityCairoEgypt
  3. 3.Department of ArchitectureFrench University in EgyptCairoEgypt
  4. 4.Department of Architectural Engineering and Environmental DesignArab Academy for Science, Technology and Maritime TransportCairoEgypt

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