© Science Publications, 2005
Investigation into Waste Management
on Construction Sites in South Western Nigeria
O.O. Akinkurolere and 3S.O. Franklin
Department of Civil Engineering,
Faculty of Engineering, University of Ado-Ekiti, Nigeria
China University of Geosciences, 430074, Yujia Shan, Wuhan
Hubei Province, People’s Republic of China
Department of Civil Engineering,
Faculty of Engineering, University of Ibadan, Nigeria
Abstract: This study aims to report investigation into the problem of waste management on construction sites in South Western Nigeria and to unveil inherent dangers material wastage poses to the construction Industry. In the construction industries, materials are very vital in building sites, but not all the materials delivered are used for the purposes for which they have been ordered and the subsequent disappearance of these materials constitutes part of the waste. The primary research instruments used was the questionnaire which contained varied questions on material wastage and management. The investigation revealed that material wastage brings about additional cost to the construction project as well as a reduction in the profit of the contractor, considering the cost of storing and transporting construction waste along with the loss of revenue from not reclaiming waste. Also, most waste that occurs at construction sites is due to poor management and lack of awareness of effective waste management. The study finally recommends that recycling and reusing of construction waste is a viable option in construction waste management and that material wastage can be reduced by giving incentives to the workers for better handling of materials and by having trained personals to supervise the works. Key words: Construction Waste, Waste Recycling, Waste Reusing INTRODUCTION
inadequacies of the materials such that at the end not all
the materials procured and delivered to sites are used
for the purposes for which they are ordered. This
excessive loss in materials is what is called Waste.
Material wastage is any extra cost over and above
the materials used, plus their handling as contained in
the estimated price for the job[5,6]. Building Research
Establishment divides material wastage into four
distinct categories namely design waste, taking off and
ordering waste, supply waste and finally, contract waste.
This study will help to determine.
Effective waste management is of growing
significance for the construction industry. Adding the
cost of storing and transporting construction waste,
along with the loss of revenue from not reclaiming
waste materials, it makes financial sense for
construction companies take action to minimize waste.
The use of recycled aggregate derived from
concrete rubble in the production of ready mixed
concrete was demonstrated in the example of an office
building, erected in Darmstadt, Germany.
Generally, the economic interest in re-using or
recycling building materials is governed by three
factors listed below[2, 3]:
The availability and thus the cost of natural or new
The availability of disposal space, the tipping
charges and the taxes for dumping.
The transportation cost.
The inherent dangers material waste poses to the
Ways of minimizing waste on construction sites.
Ways of keeping proper site records for
Finally, recommendations were made on effective
waste management on construction sites.
The significance of the Research: In the past, most
especially in some parts of Nigeria, practices to reduce,
reuse or recycle waste did not achieve widespread
implementation for a number of reasons. Firstly, people
were not aware of benefits of minimizing waste, nor
had any experience of reusing recycled or reclaimed
materials. In addition...