Bioclimatic and Energy Efficiency Considerations for Social Housing: A Case Study in Hot Dry Climate

Author(s):  
Jose M. Ochoa ◽  
Irene Marincic ◽  
Maria G. Alpuche ◽  
Sofia Canseco ◽  
Ana C. Borbon

The development of social housing In Mexico during the last decade has been supported by the different levels of government (federal, state, and municipal) in order to assist low-income families. The accelerated construction that takes place in order to address the housing deficit causes a reduction in the quality of design and construction, which is also affected by rising building costs. Environmental comfort conditions inside the dwellings are reduced drastically when houses are constructed without considering climate conditions, especially in hot arid regions. This situation generates uncomfortable thermal conditions for users and high-energy costs due to the unavoidable need of air conditioning. User profiles, architectural program, comfort preferences and guidelines for design and construction of future dwellings in the city of Hermosillo, in northwest Mexico, were determined by surveying beneficiaries of government affordable housing programs. One survey measured the degree of satisfaction of inhabitants in a sample of over 370 households; a second survey sampled 200 households and was aimed at determining aspects of comfort. This paper describes the results of thermal simulations carried out on two housing models. The first model represents the type usually constructed by commercial developers, and the second is a proposal developed by the research team according to guidelines based on the results of the research project described before. This study is a preliminary step in the construction of a physical model for experimental research and demonstration.

2018 ◽  
Vol 43 (3) ◽  
pp. 14-21
Author(s):  
Rika Kisnarini ◽  
Johannes Krisdianto ◽  
Iwan Adi Indrawan

Dwelling, which is a basic human need (Maslow, 1970) should act as an object of technology that serves as a place for individuals or families to conduct all their daily activities in order to meet their needs in life. In case of sustainability, thermal comfort is one of the most important comfort conditions that must be achieved (Szokolay SV, 1980). Proper air movement control may lessen the demand for energy, thus reducing the expense of providing a comfortable home (Boutet, 1987). However, to ensure the acceleration of air movement, the availability of both inlet and outlet openings in the building or space become an absolute requirement (Olgyay Victor, 1973). Rusunawa is a typical rental-apartment in Indonesia that served for low income families. The types of existing space generally include: a multi-functional space, a kitchen, and a bathroom/WC, and sometimes is furnished by a balcony. There is only one living space in rusunawa that is the multi-functional space which is often used for: living, sleeping, studying, watching TV, eating, storing, child-caring, and probably more other functions. Not to mention if the family has a home-based business. Among rusunawa unit types that existed in all fourteen locations in Surabaya, some of them were built without a really outdoor balcony, meaning that the balconies were provided indoor, instead of in the cantilever system. These indoor balconies accommodate the same household activities as those of outdoor balconies. However, the contribution to the internal thermal comfort may not be the same. By using Ecotect analysis 2011 program, This research intends to investigate the comparison of thermal conditions of the inner space between rusunawa unit having a balcony (outdoor), and rusunawa unit without a balcony (indoor). The result of this comparison is meant to convince the contribution of unit having a balcony to the thermal comfort of inner space, to ensure whether the design of the future rusunawa units should be equipped with a balcony or not. To further reassure its contribution, this experiment is continued by comparing between unit having just a balcony and unit having a balcony that equipped with sun-devices.


Buildings ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 21 ◽  
Author(s):  
Khadija Jnat ◽  
Isam Shahrour ◽  
Ali Zaoui

Energy consumption in the social housing sector constitutes a major economic, social, and environmental issue, because in some countries such as France, social housing accounts for about 19% of the housing sector. In addition, this sector suffers from ageing, which results in high energy consumption, deterioration in the occupant quality of life, and high pressure on the budget of low-income occupants. The reduction of the energy consumption in this sector becomes a “must”. This reduction can be achieved through energy renovation and innovation in both energy management and occupant involvement by using smart technology. This paper presents a contribution to this goal through the investigation of the impact of smart monitoring on energy savings. The research is based on monitoring of comfort conditions in an occupied social housing residence in the North of France and the use of building thermal numerical modeling. Results of monitoring show that the indoor temperature largely exceeds the regulations requirements and the use of a smart system together with occupant involvement could lead to significant savings in heating energy consumption. The novelty in this paper concerns the use of comfort data from occupied social housing residence, occupation conditions, and building thermal modeling to estimate energy savings. The proposed methodology could be easily implemented to estimate heating energy savings in social housing buildings that lack individual energy consumption monitoring.


Author(s):  
Shima Hamidi ◽  
Jinat Jahan ◽  
Somayeh Moazzeni

Transportation costs are the second largest expenditure for a family, thus have a substantial influence on housing affordability. In an auto-oriented region like DFW, the situation is exacerbated for low-income families due to limited transportation options. This study seeks to evaluate the efficiency of major affordable housing programs for low-income people in terms of transportation affordability. This study uses a rigorous methodology that involves a solid transportation cost modeling with disaggregated data available at property level for housing assistance programs in DFW. Our findings show that about 69% of the assisted units in DFW are unaffordable in terms of transportation costs. The majority of them are spending about 17% to 20% of their income on transportation. The most affordable program is Low-Income Housing Tax Credit with 58% affordability rate and the least affordable program is the Continuum of Care with 9% affordability rate when accounting for transportation costs. We also found that almost all affordable units (regarding the transportation costs) are located in main economic hubs of the region such as Dallas and Fort Worth which have better access to jobs and public transit. In contrary, almost all housing properties in the areas between Dallas and Fort Worth are unaffordable. These are areas adjacent to the University of Texas at Arlington with a high number of transit dependent population and in Arlington, the biggest midsize city with no public transit. Our findings urge HUD to consider modifying these programs by incorporating the location-efficiency factors to ensure true affordability.


2018 ◽  
Vol 221 ◽  
pp. 01006
Author(s):  
Mohamed Elkaftangui ◽  
Mohamed Basem

Housing is a major subject in the Middle East and North Africa (MENA) region, JLL, the world’s leading real estate investment and advisory firm, highlights the social and economic impact of a marked shortfall in the required supply of middle-income housing, suggesting that significant efforts are needed to address the current imbalance. For an equal standard and life style in UAE and KSA, the gap of sale and rent prices raises many questions. The middle-income sector of the market represent almost 40 percent of all households in the UAE. Several factors that have contributed to the current shortage of affordable housing, high land values, High capital costs for associated infrastructure development, low adoption of prefabricated construction techniques have contributed to higher construction costs, lower financial returns, making such developments less attractive for developers, limited access to suitable finance for low income families, due to generally immature mortgage markets. Resolving the shortage of middle-income housing requires a concentrated effort involving government agencies, private developers and other stakeholders. This Study will investigate the UAE Housing market to propose solutions for a better progress of the precast sector and focusing on the promotion of sustainable and industrial approaches to construction.


2019 ◽  
Vol 14 (4) ◽  
pp. 223-241
Author(s):  
Shahryar Habibi

This paper discusses the development of design concepts for a row of typical bamboo houses, including the layout configuration and the function/aesthetics properties that are important from an architectural perspective. The purpose of this paper is to discuss the role of bamboo in investigations of structural and sustainability benefits and to highlight key research ideas that are important for industrialized production and cultural systems. The development of bamboo housing systems can advance efforts directed at securing home ownership for low-income families through lowering the construction costs to levels that are within their budgets. This paper aims to demonstrate approaches for using bamboo as a structural material for low-income and affordable housing. Bamboo housing can improve the financial stability and economic sustainability of low-income families. This paper presents a review of examples of vernacular architecture and building elements and then highlights the design of two bamboo-structure residential houses based on bio-climatic design strategies.


2005 ◽  
Vol 30 (4) ◽  
pp. 13-16
Author(s):  
Marcelo Kehdi Gomes Rodrigues ◽  
Adelcke Rossetto Netto

Celso Garcia, 787, one of the many derelict buildings in the centre of São Paulo, was converted into housing for 84 low-income families. Members of the ULC popular housing movement occupied the vacant former bank branch and, with technical support from the Integra Interdisciplinary Work Cooperative, converted the building into affordable apartments. The project works toward the reversal of the process of exodus from the city centre, proposing housing alternatives in central areas that have lost part of their population in the last several years yet remain rich in urban infrastructure.


2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 910-910
Author(s):  
Christine Sheppard ◽  
Matthew Yau ◽  
Carol Kwon ◽  
Jorge Rios ◽  
Andrea Austen ◽  
...  

Abstract Access to affordable housing is a rising concern for many older adults, and government-sponsored social housing programs are one approach to support low-income older adult renters; however, these housing models are limited in availability and may not all be well-suited to support aging in place. To better understand how to promote the physical, mental and social wellbeing of older tenants in social housing, this scoping review mapped relevant literature to examine: 1) the characteristics of older adults in social housing; and 2) social housing service models and policies. Seven peer reviewed databases were searched for relevant articles, which were screened by two independent reviewers. A total of 140 articles met the inclusion criteria. Studies were predominately from the US and Canada; spanning over five decades of research, with publications surging in the 1980’s and in the 2010’s. Almost all studies reported on the sociodemographic and health characteristics of older tenants, and two thirds presented findings on social housing service models, including policies, staff positions and training, and access to on-site support services. This review points to a high level of vulnerability among older adult tenants living in social housing and highlights the importance of co-locating support services in social housing buildings, with dedicated tenant-support staff to identify vulnerable tenants and link them to these services. There is an acute need for more research on key issues related to housing retention, such as eviction prevention, in order to identify opportunities for social housing landlords to help older tenants age in place.


2019 ◽  
Vol 15 (1) ◽  
pp. 22-29
Author(s):  
Muhammad Ahsan

AbstractAffordable Housing is a critical issue in many developing countries that impacts their potential for sustainability and socio-economic development. Lack of affordable housing, slower growth of housing stock, and aging housing conflates numerous other problems in Pakistan, including overcrowding, poor indoor air quality, prevalence of preventable diseases, and development of slums and katchi abadies, etc. These challenges lessen living standards in many areas. Unaffordable housing forces low income families in urban areas to live in dilapidated areas. An increase in the construction of affordable housing is needed to mitigate housing affordability challenges in Pakistan. Setting aside land quotas for low-income families in housing development schemes is not sufficient because the households still lack the means to construct housing. This paper attempts to identify the causes of unaffordable housing and solutions for its provision.


2019 ◽  
Vol 37 (1) ◽  
Author(s):  
Anthony W. Cosgrove

Throughout the United States, low-income families are having an increasingly difficult time finding an affordable place to live.[1] Due to high rents, static incomes, and a shortage of housing, local communities, particularly in urban areas, are struggling to fight off this wave of decline and displacement.[2] Currently in the U.S., an estimated 12 million families are now spending more than half of their income on rent.[3] According to Federal Guidelines, “[f]amilies who pay more than 30 percent of their income for housing are considered cost burdened and may have difficulty affording necessities such as food, clothing, transportation, and medical care.”[4]A large reason for this overspending by low-income families is that the supply of affordable housing is shrinking.[5] Landlords and tenants both are adding to the affordable housing problem as “all sides are being squeezed.”[6] Today, most new construction on rental housing is for the high-end market, “not for low and middle-income families.”[7] So while the problem is clear, the cause of the problem is anything but.This note seeks a better understanding of the current housing problems plaguing local communities around the United States. Whether it is attributable to a crisis of societal construction or a shortage in the supply of affordable housing, this note attempts to reconcile current legal scholarship on local government initiatives, and 


Author(s):  
Mohd Firrdhaus Mohd Sahabuddin ◽  
Cristina Gonzalez Longo

Large migration from rural areas to urban areas like Kuala Lumpur has led to some implications for economic, social and cultural development. This high population has placed enormous demand on the existing housing stocks, especially for low-income groups.  However, some issues arise, one of which is overheated indoor air temperature. This problem contributes to the high-energy usage that forces huge sums of money to be spent on cooling the house by using mechanical equipment. Therefore, this study focuses on thermal comfort in social housing, and incorporates traditional values into its design to achieve a certain measurement of natural ventilation in a house. From the study, the carbon emission and energy consumption for an air-conditioned house is 67%, 66% higher than a naturally ventilated house. Therefore, this research has come up with a new typology design, which has a large exposed wall area and full-length openings on the opposite walls to increase cross ventilation. At the end of this research, the measurement of thermal comfort for a naturally ventilated building called ‘Air House’ has been identified.


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