Unexpected negative outcomes of community participation in low-cost housing projects in South Africa

2008 ◽  
Vol 32 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Gonzalo Lizarralde ◽  
Mark Massyn
Keyword(s):  
South Africa ◽  
Community Participation ◽  
Low Cost ◽  
Negative Outcomes ◽  
Housing Projects ◽  
Low Cost Housing

“The Information Was Hard and Tough”: Low-Cost Housing Information in Pietermaritzburg, South Africa

Libri ◽  
2007 ◽  
Vol 57 (4) ◽  
Author(s):  
William Dansoh ◽  
Christine Stilwell ◽  
Athol Leach
Keyword(s):  
South Africa ◽  
Low Cost ◽  
Low Cost Housing

Low-cost housing developments in South Africa miss the opportunities for household level urban greening

2014 ◽  
Vol 36 ◽  
pp. 500-509 ◽  
Author(s):  
C.M. Shackleton ◽  
P. Hebinck ◽  
H. Kaoma ◽  
M. Chishaleshale ◽  
A. Chinyimba ◽  
...  
Keyword(s):  
South Africa ◽  
Low Cost ◽  
Urban Greening ◽  
Household Level ◽  
Housing Developments ◽  
Low Cost Housing

Properties of Compressed Interlock Earth Blocks Manufactured from Locally Available Lateritic Soil for Low Cost Housing Projects

2021 ◽  
Vol 39 ◽  
pp. 85-93
Author(s):  
Dissanayake Dmdok
Keyword(s):  
Compressive Strength ◽  
Construction Industry ◽  
Cement Content ◽  
Low Cost ◽  
Soil Samples ◽  
Lateritic Soil ◽  
Housing Projects ◽  
Earth Blocks ◽  
Low Cost Housing ◽  
Compaction Ratio

This investigation was carried out to identify the engineering properties of compressed interlock earth blocks manufactured from locally available lateritic soil and introduce to use the manufactured soil blocks to minimize the material and finishing cost for the low cost housing projects. The soil samples used in this study were well-graded lateritic sandy soil which has the composition of 1.9% gravel, 94% sand and 4.1% silt / clay. These soil samples were passed through the 100-mesh sieve and mixed with ordinary Portland cement to prepare the admixture. While compressing through a hydraulics jack by varying the compositions and the volume of soil-cement admixtures, compaction soil blocks were manufactured in a locally fabricated 250 mm x125 mm x100 mm standard steel mould. The manufactured soil blocks allowed to cure while spraying small quantity of water and covering with polythene for 28 days. Average compressive strengths of soil blocks made with 5% cement with 1.6:1 and 1.8:1 volume compactions were 1.3 Mpa and 1.9 Mpa, respectively. However, both compressive strength values were less than the standard limits of 2.8 MPa stated in SLS 1382:2009, local standards for soil blocks used for construction industry. However, soil blocks made with 10% cement under same compaction ratios attained compressive strengths of 3.0 MPa and 3.6 MPa respectively and it is above the required standards limits. However, 15% and 20% cement containing earth blocks have much higher compressive strengths but increase the cost of production. Regression analysis results confirmed the strong correlation between cement content and the compressive strength of the soil bricks. The soil bricks manufactured with more than 12.06% cement soil mix by maintaining compaction ratio into 1.6:1 or Soil bricks manufactured with more than 5.16% cement mix by maintaining compaction ratio into 1.8:1 will produce standards soil bricks for construction industry and these results further confirmed that wet and dry compressive strength of soil bricks will increase with increasing the compaction ratio and the cement content. However, when considering the compressive strength, water absorption level and cost effectiveness, soil bricks manufactured by maintaining compaction ratio into 1.8:1 with more than 5.16% cement mix will produce required standards cost effective soil bricks for construction industry.

scholarly journals Everyday hazards and vulnerabilities amongst backyard dwellers: A case study of Vredendal North, Matzikama Municipality, South Africa

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Patricia J. Zweig
Keyword(s):  
Economic Growth ◽  
South Africa ◽  
Future Development ◽  
Low Cost ◽  
Development Planning ◽  
Small Towns ◽  
Local Municipality ◽  
Low Cost Housing ◽  
The Town

The populations of many small towns in South Africa continue to expand unmatched by parallel economic growth, entrenching high levels of poverty. The town of Vredendal, located close to the national route between Namibia and Cape Town in South Africa, is a West Coast development node and an emergent industrial and processing area that continues to attract an influx of people seeking economic opportunities. This is challenging the capacity of the local municipality, which has a waiting list for state-provided low-cost housing units, whilst the provision of adequate infrastructure to meet growing local need is also a developmental concern. In the suburb of Vredendal North this has resulted in the proliferation of unplanned informal dwellings in the backyards of formalised low-cost housing areas. Largely overlooked by urban researchers, little is known or understood about small town backyard populations. This prompted a brief study of Vredendal North backyard dwellers commissioned by the local municipality to identify their everyday hazards and livelihood vulnerabilities to inform future development planning. A community workshop identified critical development needs and suggested that backyard dwellers in small towns experience similar living conditions and hazards to those in the cities, although underlain by some unique differences.

scholarly journals Identification of Schedule-Performance Indicators and Delay-Recovery Strategies for Low-Cost Housing Projects

2019 ◽  
Vol 11 (21) ◽  
pp. 6005 ◽  
Author(s):  
Elnaz Safapour ◽  
Sharareh Kermanshachi ◽  
Bahaa Alfasi ◽  
Reza Akhavian
Keyword(s):  
Low Income ◽  
Construction Projects ◽  
Low Cost ◽  
Design And Technology ◽  
Resource Location ◽  
Cost Overruns ◽  
Housing Projects ◽  
Schedule Delay ◽  
Low Cost Housing ◽  
Schedule Performance

Many construction projects suffer from schedule delays that ultimately lead to considerable cost overruns and defeat the purpose of low-cost housing (LCH), which is to support low-income earners. It is, therefore, vital that the schedule delays and cost overruns be minimized. The objectives of this research were to investigate, identify, and classify the schedule-delay indicators (SDIs), prioritize them based on their level of impact, and formulate constructive strategies to improve the schedule performance. To achieve the objectives set forth, 68 interviews were conducted with professionals who are active in LCH projects, and a structured survey was developed and distributed to other experts involved in LCH projects to validate the result of the interviews and collect additional data. Survey responses were collected from 101 individuals and were analyzed. The significant SDIs were identified and classified by the research team and were ranked and prioritized, using the Relative Importance Index (RII) method. The results demonstrated that the identified SDIs could be classified into the following eight main categories: legal, design and technology, project characteristic, project management, material resource, human resource, location, and finance. The outcomes of this study will help project managers and stakeholders identify the causes of schedule delays early in the project and implement effective strategies for improving project performance in low-cost housing projects.

scholarly journals Applicability of using the 3D concrete printing technology in Sudan

2021 ◽  
Vol 9 (2) ◽  
pp. 64-70
Author(s):  
Ruaa Elnaeem ◽  
Mohammed Taglsir
Keyword(s):  
Low Cost ◽  
Three Dimensional ◽  
Sand Mixture ◽  
Housing Projects ◽  
Construction Methods ◽  
Concrete Mixtures ◽  
Complex Shapes ◽  
Low Cost Housing ◽  
Materials Used ◽  
The Cost

Three-dimensional (3D) Printing is an advanced manufacturing process that has been applied to many fields. Recently, the 3D Concrete Printing (3DCP) has been employed for construction due to its ability to produce complex shapes easily, with less human intervention and with minimum material wastage. However, there are challenging issues regarding the cost of construction and the components of concrete mixture which are not fully explored. The aim of this paper is to review the 3DCP technology and investigate the possibility of applying it in Sudan, specifically for low-cost housing. In order to meet this aim, a comprehensive review has been done to study the projects implemented worldwide using 3DCP technique. Then, some concrete mixtures have been reviewed analyze the amount of materials used in each mix. The necessary tests to ensure the, workability, Extrudability and buildability have also been specified. Then the 3DCP technique has been compared with three common construction methods in Sudan for low-cost housing those were 40 square meters area in plan. These methods are the cement blocks, the Ferrocement and the graded sand mixture.. The comparison has been made in terms of construction cost, construction duration and the man-force required. The results have shown that the 3DCP model needed the least number of construction days. However, it was the highest in terms of the cost and the second best in terms of the used labors. It has been concluded that applying 3DCP technology in Sudan is possible and could be effective in the low-cost housing projects.  

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