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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10859

Title: Minimizing Materials Wastage in Construction- A Lean Construction Approach
Authors: Agyekum, K.
Ayarkwa, J.
Adjei-Kumi, T.
Keywords: Materials
Lean Construction
Issue Date: 26-Jun-2013
Publisher: Journal of Engineering and Applied Science
Citation: Journal of Engineering and Applied Science Volume 5, Number 1, 2013
Abstract: It is commonly acknowledged that a very high level of waste exists in construction. Since construction has a major and direct influence on many other industries by means of both purchasing inputs and providing the products to all other industries, reducing waste in the construction industry could yield great cost savings to the society. This paper aimed at identifying the main sources and causes of materials waste on construction sites arising from storage and handling of high waste generating building materials and employing the Lean Construction approach to reduce such waste. The findings in this paper are based on a structured questionnaire survey of 226 building construction organizations and consultants in the Ghanaian building industry. The findings revealed that materials storage and handling, operational factors, design and documentation factors and procurement factors are the main sources of waste on building construction sites. Among the causes of materials waste are last minute client changes, errors by tradesmen, purchased products that do not comply with specification and lack of onsite materials control. The findings further showed that timber, cement/mortar, concrete and blocks are the four key materials that have the highest level of wastage on building sites. Recycling of some waste materials on site, re-using of surplus materials where appropriate and preventing the occurrence of waste are recommended to reduce waste. Minimizing material wastage would not only improve project performance and enhance value for individual customers, but also have a positive impact on the national economy.
Description: An article published by Journal of Engineering and Applied Science Volume 5, Number 1, 2013
URI: http://hdl.handle.net/123456789/10859
Appears in Collections:College of Architecture and Planning

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