Moisture Content, Ignitability, and Fire Risk of Vegetation in Vertical Greenery Systems

Dahanayake, Kalani C.; Chow, Cheuk Lun

doi:10.4996/fireecology.140112514

Cited by 25 publications

(13 citation statements)

References 23 publications

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“…Furthermore, both job roles were identified through literature review. However, various authors have identified the role of minimising construction waste (Boyle, 2014; Cruickshank and Fenner, 2007; Kelly, 2016; Qureshi and Nawab, 2013) as the job role rather than energy simulation (Dahanayake and Chow, 2018). Furthermore, the experts in the preliminary interview also validated that minimising construction waste is an important job role for engineers.…”

Section: Findings and Discussionmentioning

confidence: 99%

“…In addition, “knowledge on adapting renewable energy to the project in order to reduce the energy consumption of the project”, “efficient use of resources”, “knowledge of the location and geographical conditions of the project”, “improving methods to reuse and collect materials in construction and development” and “extracting natural resources” job roles were identified as high-importance job roles for engineers in relation to address the challenges associated with climate change. However, the “efficient use of resources” is the most cited job role in the literature review (Boyle, 2014; Cruickshank and Fenner, 2007; Dahanayake and Chow, 2018; Kelly, 2016). Finally, the results emphasised that “developing instrumentation for monitoring and measuring pollution” (RI – 0.568) is a job role of medium importance for Sri Lankan engineers to address the challenges associated with climate change.…”

Section: Findings and Discussionmentioning

confidence: 99%

“… [1] (Chansomsak and Vale, 2018), [2] (Osmani et al , 2008), [3] (Ayman, 2007), [4] (Siraj and Ismail, 2018), [5] (Haines, 2008), [6] (Dahanayake and Chow, 2018), [7] (Kim, 1998), [8] (Othman, 2017)…”

Section: Table 11mentioning

confidence: 99%

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Job attributes of key Sri Lankan construction professionals in addressing the challenges associated with climate change

Sandaruwan,

Bihara Janardana,

Manoharan

2023

IJDRBE

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Purpose Construction professionals are the major contributors to developing a sustainable construction industry, whereas architects, engineers and quantity surveyors are the key construction professionals who must play extraordinary roles in achieving better sustainable construction. Therefore, this study aims to identify the job attributes of key Sri Lankan construction professionals in addressing challenges associated with climate change. Design/methodology/approach The study adopted a mixed research approach. A literature review and preliminary semi-structured interviews were used to appraise the job roles of architects, engineers and quantity surveyors in addressing challenges associated with climate change. The data collected through the qualitative approach were used in an online questionnaire survey, and the findings were analysed using the relative index method. Findings The findings highlight that regardless of the knowledge of the professional category on green rating tools, carbon footprint, adaptation of renewable energies for the reduction of energy consumption, building information modelling-related applications and waste management concepts/practices are the foremost job attributes required for the key Sri Lankan construction professionals in addressing challenges associated with climate change. Research limitations/implications The results from this study provide a handful of guidance to construction industry professionals, national and international professional institutions, non-governmental organisations and other relevant authorities to address climate change within the built environment by identifying ways for improving the relevant key job attributes of construction industry professionals. Originality/value To the best of the authors’ knowledge, this is the first study that explores the job attributes of key Sri Lankan construction professionals in addressing the challenges associated with climate change.

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Section: Findings and Discussionmentioning

confidence: 99%

Section: Findings and Discussionmentioning

confidence: 99%

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Job attributes of key Sri Lankan construction professionals in addressing the challenges associated with climate change

Sandaruwan,

Bihara Janardana,

Manoharan

2023

IJDRBE

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“…They are lightweight, weather-resistant and can be printed with almost any design, but are also flammable (Mazziotti et al , 2016). Furthermore, the green cladding system is composed of a wall of vegetation developing via a reinforced mesh or growing out of some substrate, which is commonly made of some combustible plastics (Dahanayake and Chow, 2018; Medl et al , 2017; Wong et al , 2010). To date, a limited published study has been carried out on the fire safety of these cladding systems.…”

Section: Fire Hazard Of Lightweight Cladding Systemsmentioning

confidence: 99%

Flame behaviour, fire hazard and fire testing approach for lightweight composite claddings – a review

Hossain

Hassan

Yuen

et al. 2021

JSFE

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Purpose The purpose of this study is to review and summarise the existing available literature on lightweight cladding systems to provide detailed information on fire behaviour (ignitibility, heat release rate and smoke toxicity) and various test method protocols. Additionally, the paper discusses the challenges and provides updated knowledge and recommendation on selective-fire mechanisms such as rapid-fire spread, air cavity and fire re-entry behaviours due to dripping and melting of lightweight composite claddings. Design/methodology/approach A comprehensive literature review on fire behaviour, fire hazard and testing methods of lightweight composite claddings has been conducted in this research. In summarising all possible fire hazards, particular attention is given to the potential impact of toxicity of lightweight cladding fires. In addition, various criteria for fire performance evaluation of lightweight composite claddings are also highlighted. These evaluations are generally categorised as small-, intermediate- and large-scale test methods. Findings The major challenges of lightweight claddings are rapid fire spread, smoke production and toxicity and inconsistency in fire testing. Originality/value The review highlights the current challenges in cladding fire, smoke toxicity, testing system and regulation to provide some research recommendations to address the identified challenges.

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“…Hence, the temperature increases, the relative humidity decreases, and the risk of ignition is heightened: “The moisture content is considered to be the most critical factor that affects the ignitability of vegetation […] It also impacts fire propagation […] Therefore, it becomes an essential indicator in fire risk analysis” (Dahanayake and Chow, pp. 127–128 in [ 24 ]). Therefore, measuring moisture in the litter layer could be useful as a predictive indicator for fire risk assessment if the measured value adequately accounts for the heterogeneity of the litter layer.…”

Section: Introductionmentioning

confidence: 99%

A Phase-Dependent Effect That Enables Multi-Scale Moisture Measurements in Heterogeneous Substrates Using Tubular RH Sensors

Lazik

2022

Sensors

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A knowledge of the moisture in soils/soil litter allows for the estimation of irrigation needs or the risk of forest fire. A membrane-based humidity sensor (MHS) can measure the relative humidity (RH) as an average value in such heterogeneous substrates via its sensitive tubular silicone membrane. This RH corresponds to the moisture-dependent water potential of the substrate. For humid conditions in soil, however, the RH is already larger than 98% and hence is insensitively correlated with the water potential. For such conditions, a step-like response of the MHS was found, which occurs if the silicone membrane is wetted with water. This appears to correspond to oversaturated water vapor and must be attributed to a phase-dependent sorption mechanism of the membrane. This effect allows the expansion of the range of applications of the MHS in the detection of liquid water, such as in dew point detection. Based on this, the dependency of the measurement signal on the mean water saturation in a substrate along the tubular membrane is demonstrated. A comparison of the measurement signal with an internal reference signal according to the MHS measurement principle makes it possible to distinguish this new, saturation-dependent measurement scale from the one used for RH measurement.

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Moisture Content, Ignitability, and Fire Risk of Vegetation in Vertical Greenery Systems

Abstract: Vertical greenery systems (VGS) are getting popular as a green cladding material. However, they have not been adequately assessed in terms of fire safety. Lack of maintenance and

Cited by 25 publications

References 23 publications

Job attributes of key Sri Lankan construction professionals in addressing the challenges associated with climate change

Job attributes of key Sri Lankan construction professionals in addressing the challenges associated with climate change

Flame behaviour, fire hazard and fire testing approach for lightweight composite claddings – a review

A Phase-Dependent Effect That Enables Multi-Scale Moisture Measurements in Heterogeneous Substrates Using Tubular RH Sensors

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