Solar exoskeletons – An integrated building system combining solar gain control with structural efficiency

Weber, Ramon; Mueller, Caitlin; Reinhart, Christoph

doi:10.1016/j.solener.2022.05.048

Cited by 11 publications

(11 citation statements)

References 31 publications

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“…Previous research supports the decision to have enough respondents for this study. According to studies such as (Applegath et al, 2021) and (Weber et al, 2022), a sample size of 100-200 respondents is generally deemed sufficient for quantitative analyses in comparable research fields. With 126 valid responses, this study meets the recommended sample size range.…”

Section: Main Questionnairementioning

confidence: 99%

“…Because SmartPLS 4 can handle complex structural models and provide precise findings, it was chosen for these investigations. It offers complex capabilities for calculating route coefficients, testing model fit, and determining the validity and reliability of the measurement model (Shalabi and Turkan, 2020;Weber et al, 2022). This research used the PLS-SEM technique and SmartPLS 4 software to assess the convergent and discriminant validity of the measurement model.…”

Section: Pls-sem Algorithmmentioning

confidence: 99%

“…They examined the eigenvalues to ascertain the number of retained factors. Only factors with eigenvalues greater than one were controlled in this analysis, indicating their importance in explaining the observed variables' variance (Sarkisian, 2020;Weber et al, 2022). The relationship between the variables and the identified factors was determined using factor loadings (Waqar et al, 2023a;Waqar et al, 2023q).…”

Section: Efa Analysismentioning

confidence: 99%

“…The Cronbach's alpha coefficient was calculated to assess each factor's internal consistency or reliability. Higher Cronbach's alpha values indicate that the variables within a factor are more internally consistent (Sarkisian, 2022;Weber et al, 2022).…”

Section: Efa Analysismentioning

confidence: 99%

“…By employing BIM-driven energy simulation and optimisation techniques, designers and stakeholders can make informed decisions regarding selecting energy-efficient technologies, incorporating renewable energy, and enhancing the building envelope (Habibi, 2022). This contributes to climate change mitigation and has economic benefits (Sarkisian, 2022;Weber et al, 2022). According to a report, energy-efficient buildings have the potential to achieve 30 to 50 per cent energy savings, resulting in significant cost savings over the lifespan of the building (Davidson and Gales, 2021).…”

Section: Introductionmentioning

confidence: 99%

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BIM-driven energy simulation and optimization for net-zero tall buildings: sustainable construction management

Sajjad,

Hu,

Alshehri

et al. 2024

Front. Built Environ.

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The growing demand for sustainable and energy-efficient buildings, particularly in the context of tall structures, has prompted increased attention to innovative solutions. Despite advancements in Building Information Modelling (BIM) technology, there exists a critical gap in understanding its comprehensive application for achieving net-zero energy consumption in tall buildings, particularly in the Malaysian construction industry. This research addresses this gap by presenting a novel strategy that integrates BIM technology with energy analysis tools for net-zero tall buildings in Malaysia. The aim of the study is to contribute valuable insights to the construction industry, policymakers, and researchers by conducting empirical research, utilizing case studies, validating the proposed framework, advancing sustainable design practices, and supporting the transition towards net-zero energy tall buildings in Malaysia. The methodology involves a three-phase approach, including qualitative analysis, a pilot survey, and a main questionnaire. Exploratory factor analysis (EFA) validates the categorization derived from qualitative interviews, while Partial Least Squares Structural Equation Modelling (PLS-SEM) assesses the convergent and discriminant validity of the measurement model. Hypotheses testing using bootstrapping establishes the significance of correlations between BIM deployment and key factors such as early design integration, enhanced energy efficiency, optimized system integration, predictive performance analysis, and validation of sustainable design. The research findings support the positive associations between BIM deployment and the mentioned factors, providing statistical significance through T-statistics and p-values. The implications of this research extend beyond the Malaysian context, offering valuable insights for architects, engineers, and stakeholders involved in designing and managing sustainable tall buildings. By addressing the identified gaps and leveraging BIM technology effectively, stakeholders can contribute to the construction of net-zero energy structures, aligning with global efforts towards sustainable and energy-efficient building practices.

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Section: Main Questionnairementioning

confidence: 99%

Section: Pls-sem Algorithmmentioning

confidence: 99%

Section: Efa Analysismentioning

confidence: 99%

Section: Efa Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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BIM-driven energy simulation and optimization for net-zero tall buildings: sustainable construction management

Sajjad,

Hu,

Alshehri

et al. 2024

Front. Built Environ.

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Thin shell foundations: Quantification of embodied carbon reduction through materially efficient geometry

Feickert,

Mueller

2023

Archit. Struct. Constr.

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Building foundation systems are a significant but understudied contributor to embodied carbon emissions of the built environment, and typically use excess material in prismatic, bending-dominated typologies. This paper identifies and characterizes a promising pathway for reducing the embodied carbon associated with reinforced concrete shallow foundations through an alternative typology, thin shell foundations. The main focus is a quantification and comparison of the environmental impact of typical spread footings and materially efficient shell foundations. Validated analytical engineering equations are applied in a parametric design workflow for the same design load and soil bearing capacity. By iterating through this workflow systematically, insights are gained regarding the applicability of shell foundations to various building typologies and site conditions. Results show that for small column loads and weak soils, shells reduce embodied carbon by about half compared to spread footings. For high applied loads, shells significantly outperform their prismatic counterparts, reducing the environmental impact by almost two-thirds. Foundations are then considered within the context of a whole building structural frame to determine the potential downstream savings when multiple systems are optimized to reduce material use and mass. When floor slabs are shape-optimized in addition to using shell foundations, a building structural system can be constructed for nearly one-quarter of the embodied carbon of a typical system. To take advantage of these potential savings, a method for fabricating thin shell foundations, where earth is compacted and milled to create the formwork, is presented following a review of digital fabrication methods.

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Data-driven estimation of time-dependent solar gain coefficient in a two-zone building with synthetic occupants: Two B-splines integrated grey-box modeling approaches

Zhang

Sælens

Roels

2023

Building and Environment

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Solar exoskeletons – An integrated building system combining solar gain control with structural efficiency

Cited by 11 publications

References 31 publications

BIM-driven energy simulation and optimization for net-zero tall buildings: sustainable construction management

BIM-driven energy simulation and optimization for net-zero tall buildings: sustainable construction management

Thin shell foundations: Quantification of embodied carbon reduction through materially efficient geometry

Data-driven estimation of time-dependent solar gain coefficient in a two-zone building with synthetic occupants: Two B-splines integrated grey-box modeling approaches

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