World Scientific News

 Journal

 Assessment Of Materials Management On Building Projects In Ondo State, Nigeria

 Bamidele Temitope Arijeloye* And Festus Olushola Akinradewo

 2016

The control of materials on construction sites is handled carelessly by planning and purchasing departments, site supervisors and engineers as well as contractor’s organization and this have been posing various problems to contractors in realizing reasonable profit margin. The research centered on the assessment of materials management on building projects in Ondo-State Nigeria. This study assessed the current practices of managing materials on building projects, the problems associated with materials management and measures for managing materials in building projects in Ondo state. The study was carried out through the administration of questionnaire to professionals in both consulting and contracting firms and data collected were analyzed using percentile and mean item score. The study reveals that purchasing of materials, material planning method and transportation of materials are the most common practices of materials Management. The most severe problem militating against materials management was lack of proper work planning and scheduling while other problems include inadequate cash flow to contractors due to delayed payments, burglary, theft and vandalism. The study recommends that management should improve their supervision on site, materials should be adequately handled when delivered, care should be given to materials handling process and more awareness should be given to the knowledge of materials management on building projects most especially on construction sites. 

 Journal Of Construction Engineering, Technology And Management

 Journal

 Reliability Of Preliminary Cost Estimates Of Educational Building Projects In A Developing Economy

 Arijeloye, Bamidele Temitope, Aghimien, Douglas Omoregie*, Adegbembo, Taiwo Fadeke

 2004

This study focused on the reliability of preliminary cost estimates of educational building projects in Nigeria with a view to providing more reliable cost estimates and reducing the number of abandoned educational building projects caused by faulty preliminary estimates. Using a case study approach, a total of 33 completed educational building projects were assessed and 31 construction professionals (Quantity Surveyors and Architects) formed the secondary population of the study. Data were analyzed using frequency, percentage, relative importance index, paired sample t-test, effect size and variance ratio. The study revealed that approximate quantities is the most commonly used method for preparing preliminary cost estimate of educational building projects while there exist a significant difference between the preliminary cost estimate and final cost of construction of educational building projects. Despite this difference, the preliminary cost estimate is still reliable as a considerable level of accuracy was discovered. The major factors affecting the reliability of preliminary cost estimate are variation due to changes in design and specification, experience of the estimator and site condition. The study therefore recommends that care should be taken when carrying out preliminary estimate and estimating should be done by professional with experience in such area. During construction, all works should be carried out according to specification in order to avoid deviation from initial plan and estimate.