Lifespan prediction of existing building typologies

Andersen, Rune Vinther; Negendahl, Kristoffer

doi:10.1016/j.jobe.2022.105696

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…In real life, these parameters fluctuate for various underlying reasons, and using constants instead in modeling introduces a level of inaccuracy in predictions of future building stock dynamics. Another source of inaccuracy is the model's long timeframe, which was selected to obtain a realistic duration when introducing DfA and DfD and because of the long and varied lifespan of buildings, which ranges from 20 to 300 years (most commonly between 50 and 150 years) (Andersen & Negendahl, 2023; Ianchenko et al., 2020; O'Connor, 2004). Although the prediction of building stock dynamics lacks accuracy, the model still offers the possibility of identifying the environmental impacts of applying eco‐design strategies from a dynamic and macroscale perspective and across multiple building types and environmental impact categories.…”

Section: Resultsmentioning

confidence: 99%

Environmental performance of eco‐design strategies applied to the building sector

Ipsen,

Pizzol,

Birkved

et al. 2024

J of Industrial Ecology

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The application of eco‐design principles in the building sector is considered a promising way to mitigate its substantial environmental impacts. However, quantitative evidence for this mitigation potential is lacking. The objective of this study was to quantify the environmental performance of diverse eco‐design strategies when applied to the building sector. A macroscale model capable of simulating the future demand for housing and related material flows within the urban building stock was developed based on an existing building stock model. These material flows were used to build inventories for a consequential life cycle assessment and, in turn, to quantify the potential environmental consequences of introducing eco‐design strategies in the building sector, assessed across 16 impact categories. Model outputs have a high level of uncertainty but are still useful for decision‐making, given the model's simplicity and transparency. The main results show that impact reductions can be obtained from specific uses of wood and wooden products, for example, when used for the walls in high‐rise buildings, whereas using hempcrete for partition walls increases the impact. Although the use of adaptability or disassembly strategies can reduce impacts, this pay‐off can only be obtained after a long period of implementation. In summary, the present study provides new quantitative insights into the ability of eco‐design strategies to mitigate environmental impacts in the building sector.

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Section: Resultsmentioning

confidence: 99%

Environmental performance of eco‐design strategies applied to the building sector

Ipsen,

Pizzol,

Birkved

et al. 2024

J of Industrial Ecology

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“…An important reason we must grow buildings, is their lifespans are rapidly decreasing due to early demolition, which often contributes to unsustainable landfilling. Trends of shortened building lifespans have been documented through numerous studies tabulated by Anderson and Negendahl (2023). The lifespan of a house is around 60 years in the United States (Aktas and Bilec 2012), 65 years in Southeastern Europe (Novikova et al 2018) and 25 years in Japan (Wuyts et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…The lifespan of a house is around 60 years in the United States (Aktas and Bilec 2012), 65 years in Southeastern Europe (Novikova et al 2018) and 25 years in Japan (Wuyts et al 2019). Anderson and Negendahl (2023) studied buildings in Denmark and found that new buildings will have a projected lifespan 45% shorter than the average for that same building type. For example, new office buildings in Denmark have a projected lifespan of just 40 years, in contrast to office buildings built before 1960 that could have 80þ years remaining.…”

Section: Introductionmentioning

confidence: 99%

Design, Cultivation, and Acoustic Analysis of a Building-Sized Mycelium Sculpture

Dessi-Olive,

Hsu,

Oliyan

2024

Res. dir. Biotechnol. des.

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This paper describes novel computational design, simulation, and fabrication techniques employed in the production of a large sound-absorbing sculpture called Phoenix, made entirely from mycelium-composite materials (myco-materials). Myco-materials are composites made of lignocellulosic agricultural waste fibers bound by fungal mycelium and are produced at commercial scale as alternatives for plastics, insulation foam, or styrene. Mycelium composite materials have known acoustical properties that can be tuned according to variables such as growing time, substrate type, substrate size, and density. The fabrication method for producing the Phoenix sculpture revisits how we build performative and formal complexity in the most economic and sustainable way. The results indicate the potential for grown materials to be used in retrofit projects, allowing rooms to be customized in various acoustical situations, such as music or speech.

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