Browsing by Author "Adeleke, O.O."
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Item The Factors that Affect the Free Flow Speed on an Arterial in Ilorin, Nigeria(Faculty of Engineering, University Nigeria, Nsukka, Nigeria, 2016) Yusuf, I.T.; Adeleke, O.O.; Salami, A.W.; Ayanshola, A.M.Generic factors (weather, environment, vehicles, fixed roadway characteristics, pedestrian and traffic streams) singly or jointly influence the free flow speed. This paper, therefore, presents the outcome of the quantitative evaluation of the influence of these factors on the free flow speed on an arterial in a medium-sized urban settlement in Nigeria. Instantaneous speeds of forty test vehicles were observed at lull periods on the 7.1km-Offa Garage-Emir’s Road, Ilorin, with simultaneous collection of data on drivers’ and vehicle ages, passenger occupancy, roadside parked vehicles and businesses. The geometric properties of the arterial were earlier established and segmented to four uniform sections. Result of computations using the category and statistical analysis show that the environment, pedestrian and roadway geometry have negative influences on the free flow speed. This can be confirmed by the poor relationship between free flow speed and these factors, with R2 values of 14.9-55%, and lower average free flow speed of commercial saloon cars on wet pavement than on dry pavement, with 12% percentage reduction. Adoption of design and analysis of traffic stream in Ilorin and other urban settlements in Nigeria is, therefore, recommended.Item The hydraulic design of irrigation channels for Ishapa, Kwara State, Nigeria(Department of Civil Engineering, University of Ilorin, Nigeria, 2010) Ajiboye, F.O.; Ayanshola, A.M.; Bilewu, S.O; Adeleke, O.O.; Salami, A.W.The artificial application of water to land to aid crop production has enabled man to increase his ability to produce food and cash crops. All – the – year round crop production is now possible instead of the previous restriction to rain fed agriculture. However, conserving water and delivery it to the fields in an efficient manner has continued to be a challenge. This work seeks to take advantage of a dam being constructed for water supply purposes at Isapa, Kwara State, Nigeria. The reservoir capacity is far too big for the water demand and therefore a large quantity of water will be available as excess. Incidentally, an expanse of fertile land exists in the immediate downstream of the dam which is suitable for irrigation agriculture. A detailed topographical survey was carried out among other studies and a layout was prepared for the delivery of water to the fields by the use of irrigation channels. Channel parameters were established through the use various tested formulas found in literature and from experience. It was also concluded that the reservoir capacity is adequate for both water supply and irrigated farm.Item Role of Geomatics in the Management of Disasters and Infrastructural Failures(African Journals Online, 2013-02-19) Adeleke, O.O.; Jimoh, Y.A.; Ayanshola, A.M.; Aremu, A.S.The article identifies the role of Geomatics in the highly interdisciplinary disaster management to include identification and mapping of hazard prone areas, deformation monitoring of hazard prone areas and massive engineering structures, production of rescue maps and assessment of damages among others. A case study of surveying activities in the proposed flood management of Asa River in Ilorin metropolis, Nigeria was presented. The study identified possible causes of the flood to include silting along the river, blockades of free flow of water resulting from human activities such as dumping of refuse in the river and natural causes such as growth of vegetation along the river channel. The study recommends the development and deployment of Geomatics potentials in the three phases of disaster management namely; pre-disaster phase, disaster phase and post disaster phase.