Programme and abstracts for the West Africa Built Environment Research (WABER) Workshop 2009

WEST AFRICA BUILT ENVIRONMENT RESEARCH (WABER) WORKSHOP 2009 June 2-3 British Council Accra, Ghana Programme and Abstracts Professor Will Hughes, Dr Roine Leiringer, Dr Samuel Laryea School of Construction Management and Engineering, University of
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    WEST AFRICA BUILTENVIRONMENT RESEARCH(WABER) WORKSHOP2009June 2-3British Council Accra, GhanaProgramme and Abstracts Professor Will Hughes, Dr Roine Leiringer, Dr Samuel Laryea School of Construction Management and Engineering, University of Reading, UK P.O. Box 219, Reading RG6 6AW   ACKNOWLEDGEMENTS We are grateful to the following people who helped to review abstracts:Ms. Sena AgbodjahDr. Roine LeiringerDr. Emmanuel AdinyiraDr. De-Graft Owusu ManuDr. Obuks Augustine EjohwomuRev. Dr. Frank FugarDr. Bernard BaidenMr. Gabriel NaniDr. Shehu ZayyanaDr. Samuel LaryeaWe would like to appreciate the involvement of the following people in theplanning and organizing of this 1 st West Africa Built Environment Research(WABER) Workshop:Ms. Sena AgbodjahMr. Kingsley KwayisiProfessor J.S.K. AyimProfessor Edward Badu  PROGRAMMEWest Africa Built Environment Research (WABER) Workshop2-3 June 2009Main auditorium of British Council in Accra, GhanaTuesday 02/June/2009Opening session 09:00-09:10 Welcome address by  Mr. Moses Anibaba (Director of British Council in Ghana): The role of the British Council in Africa  09:10-09:20 Introductory remarks by Professor Will Hughes (Head of School of Construction Management and Engineering, University of Reading, UK)09:20-09:30 Chairman‟s remarks by Professor Kwasi Adarkwa (Vice Chancellor of Kwame Nkrumah University of Science and Technology, Kumasi, Ghana)09:30:09:35 Group photograph Presentation sessionsChairperson  Dr. Mrs. Bola Babalola (Obafemi Awolowo University, Nigeria) 09:40-09:50 Neural network based predictive model for forecasting building works,  Amusan Lekan Muritala , Covenant University, Nigeria09:50-10:00 Development of an environmental cost-metric for assessment of construction work,  Afolabi Dania , Ahmadu Bello University, Nigeria10:00-10:20 Discussion10:20-10:30 Investigating the economic feasibility of integrating energy efficient technology in buildings in Ghana,  Naa Adjeley Ashiboe-Mensah , KNUST, Kumasi, Ghana10:30-10:40 Integration of passive and low energy cooling techniques into buildings in Ghana, Samuel Amos-Abanyie , KNUST, Kumasi, Ghana10:40-11:00 Discussion11:00-11:20 Refreshments Chairperson  Dr. Emmanuel Achuenu (University of Jos, Nigeria) 11:20-11:30 An integrated approach for payment certification of construction works , Peter Kuroshi , Covenant University, Nigeria11:30-11:40 Selecting nominated subcontractors for building construction projects in Nigeria,  Anita Dzikwi Adamu , Federal University of Technology, Minna, Nigeria11:40-12:00 Discussion12:00-12:10 Construction sector and economic development in the ECOWAS: Validity of Bon curve,  Alabi Folasade , University of Lagos, Nigeria12:10-12:20 Branding the Nigerian construction industry for export, Yusuf Mohammed Isa , Federal University of Technology, Yola, Nigeria12:20-12:40 Discussion12:40-14:00 Lunch Chairperson  Professor G.W.K. Instiful  (KNUST, Kumasi, Ghana) 14:00-14:10 Project appraisal to determine the benefit worth of a project at inception, during execution, and when put into use,  Audu Daka , University of Jos, Nigeria14:10-14:20 Development of design decision support model for optimizing whole life cost of building projects during early design stage,  Baba Adama Kolo , Ahmadu BelloUniversity, Nigeria14:20-14:40 Discussion14:40-14:50 Impact of ICT on the integration of construction procurement chains in Nigeria,  Adejimi Akinboade , University of Lagos, Nigeria14:50-15:00 Appraisal of Build-Operate-Transfer (BOT) procurement model in infrastructure development projects in Nigeria,  Alhassan Dahiru , Ahmadu Bello University,Nigeria15:00-15:20 Discussion15:20-15:40 Refreshments Chairperson  Dr. Kabir Bala (Ahmadu Bello University, Nigeria) 15:40-15:50 Assessment of risk impact on building projects' performance in some cities in Nigeria: contractors' and consultants' perspectives,  Aliyu A. Soyingbe , Universityof Lagos, Nigeria15:50-16:00 Public health infrastructure projects in Ghana, the problem of non-completion,  Andrew Oppong-Danquah , Ghana Health Service, Ghana16:00-16:20 Discussion16:20-16:30 Measurement of productivity of plumbers and electricians on Nigerian construction sites, Fidelis O. Achi , University of Lagos, Nigeria16:30-16:40 Defining the parameters for good site concrete practice and management,  Anosike Nwabueze Michael , Covenant University, Nigeria16:40-17:00 Discussion    PROGRAMMEWest Africa Built Environment Research (WABER) Workshop2-3 June 2009Main auditorium of British Council in Accra, GhanaWednesday 03/June/2009 09:00-10:00 Talk by  Professor Will Hughes (Editor-in-chief of Construction Management and Economics journal):  Refereed Journal Papers: Practice and Process Chairperson  Professor Stella Zubairu (Federal University of Technology, Minna, Nigeria) 10:00-10:10 A study on the valuation of impact of landfills (dumpsites) on property values in Lagos state, Ukabam Titilayo , University of Lagos, Nigeria10:10-10:20 A study into the relationship between procurement methods and the supply chain management of the construction industry,  Duga Ewuga , Uni. of Jos, Nigeria10:20-10:40 Discussion10:40-10:50 A study on the use of benchmarking in facilities management in Nigeria, Yewande Adewunmi , University of Lagos, Nigeria10:50-11:00 An investigation into female construction undergraduates' expectations towards practice, Kulomri Jipato Adogbo , Ahmadu Bello University, Nigeria11:00-11:20 Discussion11:20-11:40 Refreshments Chairperson  Rev. Dr. Frank Fugar (KNUST, Kumasi, Ghana) 11:40-11:50 Evaluation of maintenance practices in prison institutions in South-west Nigeria, Oluranti Farinloye , University of Lagos, Nigeria11:50-12:00 Health ans safety conditions of building maintenance sites in Nigeria: the post occupancy contaminations of timber structures by microorganisms,  Isa H. Mshelgaru , Ahmadu Bello University, Nigeria12:00-12:20 Discussion12:20-12:30 Bridging the equity gap in the evaluation of public housing environments in Lagos Nigeria,  Adetokunbo O. Illesanmi , Covenant University, Nigeria12:30-12:40 Post occupancy evaluation of Ogun State housing estates in Nigeria,  A. O. Ogunde , Covenant University, Nigeria12:40-13:00 Discussion13:00-14:30 Lunch Chairperson Dr. Peter Kuroshi (Covenant University, Nigeria) 14:30-14:40 A comprehensive study of South-South places in Nigeria,  Harrison Elizabeth , University of Lagos, Nigeria14:40-14:50 Evaluation of the role of water-based facilities in tourism destinations in Lagos littoral aspects,  Nnezi Uduma-Olugu , University of Lagos, Nigeria14:50-15:10 Discussion15:10-15:20 A performance evaluation of housing finance by the Federal mortgage bank of Nigeria (1992-2008),  Musa Nuhu Madawaki , Ahmadu Bello University, Nigeria15:20-15:30 Agricultural solid waste generation in Nigeria and their recycling potentials into building materials, Usman Aliyu Jalam , Abubakar Tafawa Balewa Uni.,Nigeria15:30-15:50 Discussion15:50-16:10 Refreshments Chairperson  Dr. Koleola T. Odunsami (University of Lagos, Nigeria) 16:10-16:20 Reducing construction costs by using mechanically activated pozzolanas as partial subsitutes to ordinary portland cement,  James Sarfo-Ansah , Building andRoad Research Institute, Ghana16:20-16:30 Selected mechanical properties of mortar for masonry incoroparting artificial pozzolana,  Mark Bediako , Building and Road Research Institute, Ghana16:30-16:50 Discussion16:50-17:00 Presentation of "CERTIFICATE OF PARTICIPATION"  NEURAL NETWORK BASED PREDICTIVE COST MODELFOR BUILDING WORKS Amusan Lekan M.     Department of Building Technology, Covenant University, Canaanland, Ota, Ogun State, Nigeria A number of uncompleted and abandoned projects are attributable to overall bad projectsmanagement of which poor forecasting approach is a factor. Poor cost forecasting approach willlead to underestimating or overestimating and consequently abandonment. This research is gearedtowards developing a robust model through neural network that will enable accurate determinationof acceptable building cost. This study entails using the strengths of neural network to develop astable predictive cost models for building works using cost parameters. Data on cost parameterssuch as ground floor area, storey height and cost of substructure, upper floor, frame structure,staircase, roofing, wall, doors and windows, wall finishes, floor finishes including services wouldbe obtained from questionnaire and bill of quantities of live building projects. The theoreticalframework for this study is based on information obtained through review of past works, book of abstract and journals. Neural network was chosen as a tool in generating a predictive cost modelfor building works, based on certain advantages over other types of models, such as parametric,simulation, regression, and heuristics. These advantages include large input and output, datatraining and re-training, genetic algorithm, back-propagation effects, consistent output, less marginerror, stable output and good processing speed. A predictive cost model will be generated based onthe concept of neural network. This would be cross-validated with step-wise regression techniqueand re- sampling method would be applied to establish the model‟s degree of stability. It is hoped that a stable model will lead to a stable cost, firmly established to ensure adequate funding forproject delivery.Keywords: neural networks, prediction, cost model, building.  
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