Measuring the Impact of Enhanced Building Performance on the Seismic Resilience of a Residential Community

2017 ◽  
Vol 33 (4) ◽  
pp. 1347-1367 ◽  
Author(s):  
Henry V. Burton ◽  
Gregory Deierlein ◽  
David Lallemant ◽  
Yogendra Singh
Keyword(s):  
Seismic Performance ◽  
Recovery Period ◽  
Mitigation Strategies ◽  
Building Performance ◽  
Building Stock ◽  
Existing Building ◽  
Residential Community ◽  
Earthquake Performance ◽  
The Impact ◽  
Seismic Resilience

The relationship between the earthquake performance of an inventory of buildings and the seismic resilience of a residential community is examined, by quantifying the immediate post-earthquake reduction and recovery of the shelter-in-place housing capacity. The effect of several mitigation strategies that involve replacing portions of the existing building stock with an enhanced seismic performance system is evaluated. The impact on community resilience is assessed based on the immediate and cumulative loss of permanent housing occupancy as well as the time to recover some fraction of the pre-earthquake housing capacity. The results show how the slope of the recovery curve for occupiable housing during different periods following the event can be linked to the distribution of building damage. In addition to limiting major damage, enhanced building seismic performance is shown to reduce aggregate losses over the recovery period, thereby having a significant effect on both the safety and resilience of residential communities.

Analysis of Facade Redesign for Enhanced Satisfaction and Improved Building Performance

2014 ◽  
Vol 490-491 ◽  
pp. 845-853
Author(s):  
Serik Tokbolat ◽  
Sarim Al-Zubaidy
Keyword(s):  
Natural Ventilation ◽  
Well Being ◽  
Building Envelope ◽  
Building Performance ◽  
Energy Prices ◽  
Existing Building ◽  
Low Energy Buildings ◽  
Wind Intensity ◽  
The Impact ◽  
Occupant Satisfaction

The building envelope is known to be an important aspect of design and engineering of ultra-low energy buildings. The facade (building skin) could have the potential to redirect and filter daylight, influence frontal external wind intensity, provide natural ventilation, manage heat transfer, enhance occupant well-being, and create visual and physical connections between the inside and outside. The advances in facade technologies have been triggered in part by higher energy prices, stricter building codes, and higher occupant and owner expectations regarding the quality of the finished construction. This paper provides a comparative assessment of the effect of redesigning an existing building facade and other building improvements. It assesses the impact on external environmental conditions (wind speed and pressure) by employing computational fluid dynamics. The impact of these changes on occupant satisfaction was also gauged. It is hoped that this analysis will provide a framework for assessing benefits of improved facades in other buildings and applications

scholarly journals 19 May 2011 Kütahya – Simav earthquake and evaluation of existing sample RC buildings according to the TEC-2007 criteria

2013 ◽  
Vol 13 (2) ◽  
pp. 505-522 ◽  
Author(s):  
M. H. Arslan ◽  
M. Olgun ◽  
M. A. Köroğlu ◽  
I. H. Erkan ◽  
A. Köken ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Main Part ◽  
Building Performance ◽  
Rc Buildings ◽  
Building Stock ◽  
Existing Building ◽  
Geotechnical Characteristics ◽  
Medium Level ◽  
Turkish Earthquake Code ◽  
And Performance

Abstract. This study examines the damage caused to reinforced concrete structures by the 2011 earthquake that occurred in Simav, Turkey. The study briefly reports on post-earthquake field observations, tectonic characteristics of the earthquake area, geotechnical characteristics of the field, and seismic characteristics of the earthquake. The main part of the study comprises a field study, material experiments, and performance analyses of two reinforced concrete buildings that survived the earthquake with medium level damage. The building performance was calculated and assessed according to the Turkish Earthquake Code requirements for existing building stock, and recommendations were made based on the findings.

scholarly journals Dynamic Energy Modelling as an Alternative Approach for Reducing Performance Gaps in Retrofitted Schools in Denmark

2020 ◽  
Vol 10 (21) ◽  
pp. 7862
Author(s):  
Muhyiddine Jradi
Keyword(s):  
Public Schools ◽  
Process Evaluation ◽  
Energy Performance ◽  
Building Envelope ◽  
Building Stock ◽  
Performance Gap ◽  
Existing Building ◽  
Alternative Approach ◽  
The Impact ◽  
Retrofit Design

When considering that over 80% of buildings in Denmark were built before the 1980′s, a holistic energy retrofitting of the existing building stock is a major milestone to attain the energy and environmental targets of the country. In this work, a case study of three public schools is considered for post-retrofit process evaluation. The three schools were heavily retrofitted by September 2018 with energy conservation and improvement measures that were implemented targeting both the building envelope and various energy systems. A technical evaluation of the energy retrofit process in the schools was carried out, when considering one year of operation after the completion of the retrofitting work. Actual data from the heating and electricity meters in the schools were collected and compared with the pre-retrofit design numbers which rely majorly on static tabulated numbers for savings evaluation. It was shown that the retrofit design numbers largely overestimate the attained savings, where the average performance gap between the expected and real numbers for the three schools is around 61% and 136% for annual heating and electricity savings, respectively. On the other hand, an alternative approach was proposed where calibrated dynamic energy performance models, which were developed for the three schools in EnergyPlus, were used to simulate the impact of implementing the retrofit measures. It was shown that implementing this approach could predict much better the impacts of the retrofit process with an average gap of around 17% for heating savings and 21% for electricity savings. Based on the post-retrofit process evaluation in the three schools, it was concluded that using dynamic model simulations has the potential of lowering the performance gap between the promised and real savings when compared to static tabulated approaches, although the savings are still generally over-estimated in both approaches.

scholarly journals Energy performance assessment of passive buildings in future climatic scenarios: the case of study of the childcare centre in Putignano (Bari, Italy)

2021 ◽  
Vol 2069 (1) ◽  
pp. 012146
Author(s):  
L M Campagna ◽  
F Carlucci ◽  
P Russo ◽  
F Fiorito
Keyword(s):  
Energy Performance ◽  
Mitigation Strategies ◽  
Weather Data ◽  
Indoor Environmental Quality ◽  
Research Activity ◽  
Building Stock ◽  
Dynamic Simulations ◽  
Existing Building ◽  
Energy Retrofit ◽  
Childcare Centre

Abstract The building sector is a primary target for GreenHouse Gas emissions mitigation efforts, as it accounts for 36% of final energy use. The most effective mitigation strategies include the energy retrofit of the existing building stock. Among existing buildings, particular attention should be paid to school buildings, which are among the most diffuse public buildings in Europe, most of them built decades ago, with a resulting high potential in terms of refurbishment effectiveness. Moreover, schools cover a social function and require high levels of indoor environmental quality. In this field, the research activity is intense, but retrofit strategies are still conceived considering historical weather data, which could not represent correctly present and future climate patterns, reducing the retrofit effectiveness. In this work, an energy retrofit to “Passivhaus standard” of a childcare centre located in the Mediterranean area is analysed through dynamic simulations. A post-retrofit building model is simulated using Typical Meteorological Year (TMY) and compared with the ones simulated in future weather scenarios, created using the morphing method. The analyses aim to assess if the technical solutions currently adopted on the basis of the TMY will lead to acceptable energy performance in future decades. Furthermore, a sensitivity analysis of different design solutions is performed, aiming to assess their effectiveness in future weather conditions.

scholarly journals Seismic Policy, Operations, and Research Uses for a Building Inventory in an Earthquake-Prone City

2020 ◽  
Vol 11 (6) ◽  
pp. 709-718
Author(s):  
Ken Elwood ◽  
Olga Filippova ◽  
Ilan Noy ◽  
Jacob Pastor Paz
Keyword(s):  
Central Business District ◽  
Cost Effective ◽  
Seismic Retrofitting ◽  
Detailed Knowledge ◽  
Policy Uncertainty ◽  
Regulatory Structure ◽  
Building Stock ◽  
Existing Building ◽  
Building Inventory ◽  
The Impact

AbstractAfter the 2016 New Zealand Kaikoura Earthquake, the absence of information about the state of buildings in Wellington proved to be a source of significant policy uncertainty. Authorities did not know what damages to expect and therefore how to react, and policies needed to be formulated without a clear quantification of the risks. Moreover, without detailed knowledge of the existing buildings, it was difficult to assess what the available legal and regulatory tools can achieve and choose among them. We describe the creation of a building inventory database for Wellington initiated by the authors. This database aims to assist the generation of research on the risks, impacts, and viable solutions for reducing future seismic risk in Wellington’s central business district (CBD). The database includes structural, economic, and market information on virtually every significant building in the CBD. Its primary purposes are: to collate and provide the best available information about the expected seismic performance of the existing building stock; to assess the impact of possible multiple building failures due to a seismic event; to describe a viable cost-effective path for seismic retrofitting; and to inform the design of a regulatory structure that can facilitate this resilience-building agenda.

scholarly journals Method for Scalable and Automatised Thermal Building Performance Documentation and Screening

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3866 ◽  
Author(s):  
Christoffer Rasmussen ◽  
Peder Bacher ◽  
Davide Calì ◽  
Henrik Aalborg Nielsen ◽  
Henrik Madsen
Keyword(s):  
Large Scale ◽  
Energy Performance ◽  
Solar Irradiation ◽  
Building Performance ◽  
Performance Parameters ◽  
The European Union ◽  
Outdoor Temperature ◽  
Building Stock ◽  
Existing Building ◽  
Energy Signature

In Europe, more and more data on building energy use will be collected in the future as a result of the energy performance of buildings directive (EPBD), issued by the European Union. Moreover, both at European level and globally it became evident that the real energy performance of new buildings and the existing building stock needs to be documented better. Such documentation can, for example, be done with data-driven methods based on mathematical and statistical approaches. Even though the methods to extract energy performance characteristics of buildings are numerous, they are of varying reliability and often associated with a significant amount of human labour, making them hard to apply on a large scale. A classical approach to identify certain thermal performance parameters is the energy signature method. In this study, an automatised, nonlinear and smooth approach to the well-known energy signature is proposed, to quantify key thermal building performance parameters. The research specifically aims at describing the linear and nonlinear heat usage dependency on outdoor temperature, wind and solar irradiation. To make the model scalable, we realised it so that it only needs the daily average heat use of buildings, the outdoor temperature, the wind speed and the global solar irradiation. The results of applying the proposed method on heat consumption data from 16 different and randomly selected Danish occupied houses are analysed.

scholarly journals What Are the Implications of Climate Change for Retrofitted Historic Buildings? A Literature Review

2020 ◽  
Vol 12 (18) ◽  
pp. 7557 ◽  
Author(s):  
Lingjun Hao ◽  
Daniel Herrera-Avellanosa ◽  
Claudio Del Pero ◽  
Alexandra Troi
Keyword(s):  
Climate Change ◽  
Energy Performance ◽  
Thermal Mass ◽  
Historic Buildings ◽  
Building Stock ◽  
Existing Building ◽  
Extreme Precipitation Events ◽  
Warming Climate ◽  
The Impact ◽  
Precipitation Events

Historic buildings account for more than one-quarter of Europe’s existing building stock and are going to be crucial in the achievement of future energy targets. Although a drastic reduction in carbon emissions would slow climate change, an alteration in the climate is already certain. Therefore, the impact of climate change on retrofitted historic buildings should be considered in terms of occupants’ comfort, heritage conservation, and energy performance. Inappropriate interventions might weaken the potential of traditional climate adaptive solutions, such as thermal mass and night cooling, leading to higher risks of overheating in a warming climate. Similarly, retrofit solutions will change the moisture dynamics of historic envelopes, which might lead to moisture damages when combined with more extreme precipitation events. This paper reviews recent literature that provides evidence of climate change’s impact on retrofitted buildings, reveals potential future risks, and thereby sheds light on new factors influencing the decision-making process in the retrofit of historic buildings.

Reawakening the World's Most Famous Office Building: Economics behind a Groundbreaking Energy Efficiency Retrofit

2017 ◽  
pp. 1-13
Author(s):  
Denise Akason ◽  
Helee Hillman
Keyword(s):  
New York ◽  
Energy Efficient ◽  
Mitigation Strategies ◽  
Office Building ◽  
Building Stock ◽  
Existing Building ◽  
The Real Estate ◽  
Energy Retrofit ◽  
Empire State Building ◽  
Complex Projects

This case highlights a recent and important type of new sustainability project for existing buildings commonly referred to as an integrated energy retrofit (IER) project. Anthony Malkin of Malkin Holdings, owner of the Empire State Building (ESB), acknowledged the importance of making the existing building stock, particularly in New York City, more energy efficient, as it comprises a large part of the real estate in most cities. Taking a bold leadership position, Malkin vowed to make the ESB the most energy-efficient, sustainable, “green” pre-war office building through an IER project that examined several facets of the building's systems, operations, and tenant behaviors. In addition to making the ESB a green icon in Manhattan, Malkin also stated the importance of making the project transparent and economical so other pre-war buildings could copy the model. This case study examines in depth the process that Malkin Holdings underwent in attaining its goal of establishing the ESB as a leader in existing building sustainability.After discussing and analyzing the case, students should be able to: Understand how to balance costs and benefits associated with an IER project Explain the benefits of green retrofitting to owners and tenants Identify risks in high-profile, complex projects and recommend mitigation strategies

Factors influencing the retrofitting of existing office buildings using Adelaide, South Australia as a case study

2015 ◽  
Vol 33 (2) ◽  
pp. 150-166 ◽  
Author(s):  
Toby Bruce ◽  
Jian Zuo ◽  
Raufdeen Rameezdeen ◽  
Stephen Pullen
Keyword(s):  
Energy Efficiency ◽  
South Australia ◽  
Green Building ◽  
Low Grade ◽  
Structured Interviews ◽  
Building Stock ◽  
Content Type ◽  
Existing Building ◽  
The Impact ◽  
Storey Building

Purpose – The purpose of this paper is to explore the barriers preventing investment in the re-use of low-grade multi-storey building stock in order to identify attributes that determine whether an existing building is suitable for retrofitting. Design/methodology/approach – Semi-structured interviews were undertaken with key industry practitioners to investigate existing practices and barriers facing low-grade building retrofits and what “ideal” multi-storey building features represent a successful investment opportunity. Findings – The findings showed that tenant commitment is necessary before any project goes ahead and that there exist many barriers influencing the investment decision. These include: high levels of asbestos found in existing buildings; changes in the National Construction Code necessitating enhanced fire safety and disability access; heritage listing; lack of awareness; overestimation of costs involved on simple and effective energy efficiency upgrades and change in tenant demands towards modern and efficient open plan offices. Many low-grade structures are privately owned inherited assets where the owners lack the expertise and capital to undertake retrofitting effectively. Research limitations/implications – The study is focused on the Adelaide CBD in South Australia but the findings are relevant to other Australian cities. Practical implications – There is room in the market for more positive and influential schemes such as the Green Building Fund that encourage more energy efficiency upgrading of these buildings. Social implications – The greater occurrence of retrofitting and re-use of older buildings, rather than demolition and rebuilding, has advantages with regard to reducing the impact of buildings on the environment and promoting sustainability. Originality/value – The research has indicated certain features of older buildings which render them as suitable candidates for retrofitting and refurbishment.

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