Holistic analysis and prediction of life cycle cost for vertical greenery systems in Singapore

Huang, Ziyou; Tan, Chun Liang; Lu, Yujie; Wong, Nyuk Hien

doi:10.1016/j.buildenv.2021.107735

Cited by 11 publications

(4 citation statements)

References 53 publications

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“…The maintenance and operational costs of a building during its life cycle are much greater than its original cost, the capital cost of construction [13]. This is supported by a study by Huang et al [14] in 2021 regarding life cycle cost, which states that maintenance costs are much higher than initialization, installation, and demolition.…”

Section: Introductionmentioning

confidence: 91%

Determining Factors of Fixed Offshore Platform Inspections in Indonesia

2023

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Damage to fixed offshore platforms can affect their structural integrity in addition to environmental conditions. Inspections are important because they aim to detect and control defects or damage to make repairs and carry out maintenance, if necessary, to reduce the possibility of failure. This study aims to determine the factors that affect inspections of fixed offshore platforms in Indonesia. To determine these factors, questionnaires were distributed to experts, including senior practitioners and Ph.D. academics, involved in offshore platforms. For data processing, we first used descriptive statistics based on the mean and SD to indicate the ranking of a factor’s importance. Secondly, we performed factor analyses to summarize the information contained in multiple factors. The two methods are carried out to complement each other in determining the factors formed from the respondents’ assessments. This study finds three factors in inspections of fixed offshore platforms based on the percentage variance: the first factor is environmental conditions, the second is structural design, and the third is anomalies and defects. By knowing these factors, such comprehension can be used as a consideration in conducting inspections. Each factor must be identified because each factor can affect inspections of fixed offshore platforms.

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Section: Introductionmentioning

confidence: 91%

Determining Factors of Fixed Offshore Platform Inspections in Indonesia

2023

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“…Although vertical greeneries have many advantages, such as providing cooling effects and aesthetics [69,70], they can accelerate the deterioration of façade materials [71,72]. In addition, vertical greeneries require additional supporting structures [73,74], which are prone to corrosion and thereby increase the risk of falling objects, as shown in Figure 5. As a "City in a Garden" [75], Singapore has been adopting vertical greeneries for both residential and commercial buildings [76].…”

Section: Vertical Greenerymentioning

confidence: 99%

Climate Change Projection and Its Impacts on Building Façades in Singapore

Chew

2023

Sustainability

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Singapore is one of the most populous countries, and the majority of the population stays in high-rise public flats. In 2021, there were about 1.1 million public residential units, of which 79% were above 20 years old. The number of incidents of falling objects from a height has been increasing due to the aging and deterioration of buildings. The Periodic Façade Inspection (PFI) regime was enacted in 2020 to mandate façade inspections for all buildings above 13 m and exceeding 20 years old. However, the relatively new PFI regime has not considered the potential impacts of climate change on building façades. In this paper, the common root causes of façade defects that can be impacted by climate change are first identified. Based on the climate projection in Singapore to 2100, Singapore is expected to experience a higher mean temperature, a higher rainfall intensity, more extreme rainfall events, and a higher wind gust speed. Overall, these changes in the climate pattern will accelerate corrosion or degradation, material fatigue, adhesion failure, biological attack, and humidity or dampness. The impacts of climate change on vertical greeneries are also discussed. This paper provides a first insight into the key concerns to focus on for the future revision and improvement of the PFI regime to incorporate climate change impacts on façades.

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“…Different strategies have been proven and used for reducing the impact of UHI and enhancing the microclimate of urban areas. Apart from other strategies, urban greenery, especially trees, and vegetation areas have been proven to be one of the most effective measures for enhancing the microclimate and mitigating UHI environmental impacts [31][32][33][34]. Furthermore, previous studies listed a number of benefits that can be achieved by increasing greenery, such as reducing air pollutants and particulates, energy-saving and conservation through cooling benefits, noise buffering, improving psychological wellbeing, human interaction, and social life, and increasing property value [35,36].…”

Section: Vegetation and The Impact Of The Urban Heat Island Uhi On Th...mentioning

confidence: 99%

The Influence of Greenery and Landscape Design on Solar Radiation and UHI Mitigation: A Case Study of a Boulevard in a Hot Climate

Shareef

2022

World

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Greenery is one of the most influential factors in reducing the outdoor air temperature and enhancing the microclimate in hot areas. Previous studies focused on studying Urban Heat Islands (UHI) on a specific level; this research investigates the impact of greenery on different levels and three types of UHI, pedestrian, canopy, and boundary, to provide a holistic image of greenery impact on the atmosphere. Further, whereas vegetation impact has been addressed in previous studies, no valuable study has been found that investigates the impact of vegetation within the local climate conditions of the UAE. In this research, different types of greenery will be investigated to find their impact on outdoor microclimate parameters and the UHI within the hot climate conditions of the UAE. The case study of this research is a boulevard located in Dubai; the International Media Protection Zone’s main boulevard was selected to simulate different scenarios based on vegetation type and Leaf Area Density (LAD) using ENVI-met. The results showed that 12 m trees and the cylindrical tree are the most effective vegetation in reducing the air temperature; the variation between these scenarios and the existing case reaches 0.70 °C and 0.66 °C, respectively. The 10 m trees also have an influencing impact on reducing the air temperature by 0.50 °C. The same vegetation types showed a positive performance in absorbing shortwave radiation. The reduction in the reflected wave compared to the reference case was 36.07 W/m2 and 31.45 W/m2 for the 12 m and 10 m trees, respectively. Furthermore, the reduction in air temperature of a proposed scenario can reach 2.41 °C, 1.12 °C, and 1.08 °C for the investigated UHI levels. The results of this study will provide a canyon greenery prototype, with optimized performance in hot, humid climate areas.

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Holistic analysis and prediction of life cycle cost for vertical greenery systems in Singapore

Cited by 11 publications

References 53 publications

Determining Factors of Fixed Offshore Platform Inspections in Indonesia

Determining Factors of Fixed Offshore Platform Inspections in Indonesia

Climate Change Projection and Its Impacts on Building Façades in Singapore

The Influence of Greenery and Landscape Design on Solar Radiation and UHI Mitigation: A Case Study of a Boulevard in a Hot Climate

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