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Sustainability Improvement in the Design of Lightweight Roofs: A New Prototype of Hybrid Steel and Wood Purlins

Author

Listed:
  • Harkaitz García

    (Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), 48940 Leioa Vizcaya, Spain)

  • Mikel Zubizarreta

    (Business Organization Department, University of the Basque Country (UPV/EHU), 48940 Leioa Vizcaya, Spain)

  • Jesús Cuadrado

    (Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), 48940 Leioa Vizcaya, Spain)

  • Juan Luis Osa

    (Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), 48940 Leioa Vizcaya, Spain)

Abstract

A new structural typology of a hybrid purlin, made of type C cold steel and rectangular laminated wood (SWP), is presented in this paper. As a result, improvements on the most commonly used steel purlins are achieved, by substituting some of the steel sections for wooden sections. Although the wooden section is weaker and has a lower elastic modulus than the steel, the overall dimensions of the SWP are no larger than the type C steel purlin. In comparison with the steel ones, SWP purlins achieve a far better performance in terms of sustainability and are of lower weight, so less material will be needed for the main structure of the building. The behavior of each material in its position and the improvements in terms of sustainability and lower weight are analyzed as a function of span length, slope, and design load. To do so, the influence of both tensile stress and deformation design criteria in each section and the influence of those criteria on the choice of material and the lengths of each section are all examined. Finally, a design guide for the SWPs is presented that applies the proposed technical specifications.

Suggested Citation

  • Harkaitz García & Mikel Zubizarreta & Jesús Cuadrado & Juan Luis Osa, 2018. "Sustainability Improvement in the Design of Lightweight Roofs: A New Prototype of Hybrid Steel and Wood Purlins," Sustainability, MDPI, vol. 11(1), pages 1-17, December.
    • Handle: RePEc:gam:jsusta:v:11:y:2018:i:1:p:39-:d:192285
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    References listed on IDEAS

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    1. Annette Hafner, 2017. "How Building with Wood Can Be Linked to Sales of Building Plots: Results from an Exemplary Site Development in Munich, Germany," Sustainability, MDPI, vol. 9(6), pages 1-16, June.
    2. Julian Canto-Perello & Maria P. Martinez-Garcia & Jorge Curiel-Esparza & Manuel Martin-Utrillas, 2015. "Implementing Sustainability Criteria for Selecting a Roof Assembly Typology in Medium Span Buildings," Sustainability, MDPI, vol. 7(6), pages 1-18, May.
    3. Oriol Pons & Albert De la Fuente & Antonio Aguado, 2016. "The Use of MIVES as a Sustainability Assessment MCDM Method for Architecture and Civil Engineering Applications," Sustainability, MDPI, vol. 8(5), pages 1-15, May.
    4. Alejandro Padilla-Rivera & Ben Amor & Pierre Blanchet, 2018. "Evaluating the Link between Low Carbon Reductions Strategies and Its Performance in the Context of Climate Change: A Carbon Footprint of a Wood-Frame Residential Building in Quebec, Canada," Sustainability, MDPI, vol. 10(8), pages 1-20, August.
    5. Jozef Švajlenka & Mária Kozlovská, 2018. "Perception of User Criteria in the Context of Sustainability of Modern Methods of Construction Based on Wood," Sustainability, MDPI, vol. 10(2), pages 1-17, January.
    6. Shenghan Li & Huanyu Wu & Zhikun Ding, 2018. "Identifying Sustainable Wood Sources for the Construction Industry: A Case Study," Sustainability, MDPI, vol. 10(1), pages 1-14, January.
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    Cited by:

    1. Yinqi Zhang & He Wang & Weijun Gao & Fan Wang & Nan Zhou & Daniel M. Kammen & Xiaoyu Ying, 2019. "A Survey of the Status and Challenges of Green Building Development in Various Countries," Sustainability, MDPI, vol. 11(19), pages 1-29, September.

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