Construction industry in developing countries

Moavenzadeh, Fred

doi:10.1016/0305-750x(78)90027-x

Cited by 56 publications

(39 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In incremental housing, capital equipment can be hired to perform certain processes in the course of construction for which human being cannot perform efficiently. However, in developing countries labour intensity increases as a result of ruralurban migration (Giddings, 2007;Albuquerque, 2012) but productivity declines because of lower technological levels (Wells, 2001;Moavenzadeh and Rossow, 1975). This is supported by data presented in Figure 1 for the case of Tanzania (World Bank, 2015b).…”

Section: Cost Shares and Factor Intensity In Incremental Housing Projsupporting

confidence: 62%

Cost Shares and Factor-Cost Ratios in Owner-Built Incremental Housing in Dar Es Salaam, Tanzania

Alananga¹,

Lucian²

2016

JCDC

View full text Add to dashboard Cite

Abstract:The adoption of incremental owner-built techniques in housing construction relies on the associated lower cost compared to developer-built approaches. The mechanism that lowers cost is however, not obvious. This study is based on survey data that were collected using questionnaires which were distributed to 200 respondents in Dar es Salaam, Tanzania with response rate of 22.5%. The analysis results, based on descriptive statistics and regression analysis indicate that an incremental house-builder targeting an additional bedroom incrementally spends 28% lower annual construction cost and each additional square meter built, is associated with 0.4% lower cost. However, such lower cost comes at a 5%-10% longer completion time. These observations suggest that spreading costs over time reduces construction cost through multiple cost-saving channels opened up by time itself and factor intensity. The intensity of incremental housing construction favours increasing expenditure on labour than capital yielding a 5% reduction in annual cost but the greatest cost reduction benefit of up to 26% is realised through increasing expenditure on "capital" with fixed spending on materials during construction.

show abstract

Section: Cost Shares and Factor Intensity In Incremental Housing Projsupporting

confidence: 62%

Cost Shares and Factor-Cost Ratios in Owner-Built Incremental Housing in Dar Es Salaam, Tanzania

Alananga¹,

Lucian²

2016

JCDC

View full text Add to dashboard Cite

show abstract

“…Some of these materials are renewable resources like trees and straw, and some may be so abundant that their supply seems almost inexhaustible like rocks, clay and sand. One of the beauties of building with local materials is that they seem to fit well with the feeling of the place naturally [24].…”

Section: Utilizing Natural Resources As Building Materialsmentioning

confidence: 98%

Mitigating High Energy Consumption for Residential Buildings in The Gambia.

Sonko¹,

Wang²

2017

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

View full text Add to dashboard Cite

As the price of energy goes up, more and more concern has been focused on the sustainable development of residential houses. One of the best solutions would be construction of low energy consuming "passive" houses. A study of residential buildings in The Gambia shows that most occupants of the buildings have persistent and growing problems with the indoor environment. Most buildings are characterized by poor design in relation to the climate, which requires a great deal of energy for cooling during extreme climate. Other problems are poor natural ventilation, inadequate surface volume ratio and poor building orientation. The main question analyzed was whether comfort is achievable solely by the use of passive design strategies, or if energy consuming mechanical systems are required. However, there is no official residential passive housing standard at the present time in The Gambia. This paper focus on the experimental and numerical investigations to determine how the building construction mass, the climatic parameters and the management of air changes rates behave on the effectiveness of natural ventilation and on indoor comfort conditions. Using portable thermometers monitoring instruments data were acquired during a period of a hottest summer phase, in parallel with occupancy survey. Passive cooling techniques can reduce the peak cooling load in buildings, thus reducing the size of the air conditioning equipment and the period for which it is generally required. This paper reviews and critically analyzes various passive cooling techniques and their role in providing thermal comfort and its significance in energy conservation.

show abstract

“…This analysis of theoretical development shows the continuing uneven distribution in production and consumption, differentiating the role of structural and institutional conditions on different scales [9,10].…”

Section: Research Of Existing Solutions Of the Problemmentioning

confidence: 99%