Effect of Topology Irregularities and Construction Quality on Life-Cycle Cost of Reinforced Concrete Buildings

Tesfamariam, Solomon; Sánchez-Silva, Mauricio; Rajeev, Pathmanathan

doi:10.1080/13632469.2012.762955

Cited by 9 publications

(5 citation statements)

References 33 publications

(34 reference statements)

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“…The figure shows that the number of severe heat stress hours (WBGT ≥ 25) are higher in the case of a lower star-rated houses compared to a higher star-rated houses at a constant meant T. Fig. 9.4 Heat stress hours against mean outdoor temperature (Mean T) in different star rated houses [54] The probabilities of experiencing heat stress by the occupants in different energy star rated houses were calculated using the following formula [57]:…”

Section: Mitigation Of Heat Stress Risk Through Building Energy Retrofittingmentioning

confidence: 99%

Building Adaptation to Extreme Heatwaves

Kumar

Alam

Sanjayan

2021

Springer Tracts in Civil Engineering

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Climate change is aggravating the summer heatwaves, making them more severe, frequent and prolonged. During the heatwave period, buildings are overheated due to heat gain from surroundings which poses significant risks to the occupants. Therefore, adapting our buildings to extreme heatwaves is of paramount importance. This chapter aims to identify the factors contributing to overheating buildings and the associated mitigation measures. The identified overheating factors are low energy building design, lightweight construction materials, internal heat gain, occupant behaviour and urban heat island effect. The overheating mitigation measures are divided into four categories (1) Modification of local microclimate, (2) resistance to heat transfer from outdoor to indoor (3) Absorption of transferred heat through thermal mass, and (4) Release of trapped heat from indoor to outdoor. The effectiveness of each mitigation measure category depends on indoor and outdoor environmental conditions. Numerical analysis showed that the risk of experiencing heat stress during extreme heatwave decreases with increasing energy star rating of the houses in Melbourne, Australia. If the entire existing lower energy star rated houses can be upgraded to 5.4 star, the percentage of Melbourne population experiencing six severe heat stress hours will decrease from 50% to only 4% at 36 °C mean outdoor temperature. The heat-related mortality and morbidity also decreases with increasing house energy rating. Net-benefit analysis showed that upgrading the lower energy rated houses to 5.4 star is highly beneficial with net-benefit becoming positive within 2-5 years. Emerging technology like dynamic insulation material (DIM) which changes the resistance of the external walls and ceilings depending on the indoor and outdoor temperature can help to minimise overheating in a highly insualted and air-tight building. Numerical simulation showed that DIM reduces the indoor air temperature in bedroom and living room by up to 1.1 °C and 1.2 °C, respectively, in the case study building in Melbourne, Australia.

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Section: Mitigation Of Heat Stress Risk Through Building Energy Retrofittingmentioning

confidence: 99%

Building Adaptation to Extreme Heatwaves

Kumar

Alam

Sanjayan

2021

Springer Tracts in Civil Engineering

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“…Based on the concept and procedure of LCC analysis of concrete structures presented in previous sections, four papers are introduced herein, [19], [20], [21], and [22]. The aim of this section is to present applications and case studies written by experts on the advanced technologies for estimating the LCC of structures such as buildings and bridges, considering, in some situations, the risk.…”

Section: Case Studiesmentioning

confidence: 99%

“…The impact and interaction of soft story irregularities and construction quality on LCC of reinforced concrete buildings under seismic hazard are investigated in [21]. Results of the analytical works presented in that reference showed that the impact of construction quality was of paramount importance in the overall LCC assessment.…”

Section: Case Studiesmentioning

confidence: 99%

Life Cycle Cost Management of Concrete Structures

et al. 2018

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Tools, guidelines and standards for assessment of Life Cycle Cost (LCC) of built environment e.g. buildings, infrastructure assets etc. have gained impact over the past years. Owner and operator application of tools, guidelines and standards enhances optimization of operation and maintenance with due respect to their budgets. In order to aid owners, operators and their designers, a task group under fib has been established to prepare a state-of-the-art report regarding LCC analyses of concrete assets. The state-of-the-art report contains a description of existing LCC standards and guidelines, their applicability, the definition of different cost elements, and the treatment of uncertain information in a reliability or risk based framework, etc. providing the reader with background information and methodology for preparation of such analysis. Moreover, the report contains case studies, presenting the applicability of the LCC analysis methodology.

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“…Based on the concept, procedure, and flowchart of LCC analysis of concrete structures presented in previous sections, three papers are introduced herein (Val and Stewart 2003;Tesfamariam et al 2013;Safi et al 2015). To obtain the best balance of the safety, economy and sustainability requirements, LCC estimation of structure and infrastructure must be included in the decision-making process.…”

Section: Case Studymentioning

confidence: 99%

“…Results of the LCC analysis can be applied to select optimal strategies improving durability of RC structures in marine environments. Tesfamariam et al (2013) investigated the impact and interaction of soft story irregularities and construction quality on LCC of RC buildings under seismic hazard. Results of their analytical works showed that the impact of construction quality was of paramount importance in the overall LCC assessment.…”

Section: Case Studymentioning

confidence: 99%

Life Cycle Cost, As a Tool for Decision Making on Concrete Infrastructures

Matos

Solgaard

Santos

et al. 2017

High Tech Concrete: Where Technology and Engineering Meet

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The use of Life Cycle Cost (LCC) tools in civil engineering is increasing, due to the need of infrastructure owners and operators to guarantee their assets maximum performance with an optimized budget. By considering these tools it will be possible to manage assets along their lifetime in a more sustainable and efficient way. Due to this reason, it was recently constituted a Task Group on fib to deal with existing LCC tools for concrete infrastructures. This paper gives an introduction to these tools, with a special emphasis to the added-value of LCC, and to the main contents of the fib TG 8.4 state-of-art technical report. This covers a description of existing LCC standards and guidelines, their applicability, the definition of different cost elements, the incorporation of risk in the analysis, etc.

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Effect of Topology Irregularities and Construction Quality on Life-Cycle Cost of Reinforced Concrete Buildings

Cited by 9 publications

References 33 publications

Building Adaptation to Extreme Heatwaves

Building Adaptation to Extreme Heatwaves

Life Cycle Cost Management of Concrete Structures

Life Cycle Cost, As a Tool for Decision Making on Concrete Infrastructures

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