School of Environmental Technology (SET)

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School of Environmental Technology (SET)

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Start date: 2010End date: 2019

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    Strength characteristics of modified black clay subgrade stabilized with cement kiln dust
    (2018) Jimoh I. O.; Amadi A. A; OGUNBODE, Ezekiel Babatunde
    This paper presents the results of a laboratory study in which the strength properties of black cotton soil (BC soil) subgrade modified with quarry fines (QF) were stabilized with cement kiln dust (CKD). The experimental program included Atterberg limits, compaction and unconfined compression testing of BC soil treated with QF at a constant dosage of 10% stabilized with CKD for dosages in the range 0–16% on dry weight basis. Soil mixtures were compacted with British Standard Light energy, and specimens for unconfined compression testing were prepared at predetermined optimum moistures and cured for 28 days. Test results showed that the studied soil which classify as A-7-6 (20) group in American Association of State Highway and Transportation Officials classification system has liquid limit and plasticity index of approximately 85.0 and 50.5%, respectively, as well as a free swell of 65.0%. The application of QF together with the varying percentages of CKD lowered these parameters to values compatible with specification for subgrade layers prescribed by Nigerian General Specification for Roads and Bridges. While the addition of QF caused an increase in the maximum dry unit weight of the soil, the introduction of CKD resulted in the reduction of the maximum dry unit weight of soil mixtures. On the other hand, optimum moisture contents increased slightly following the treatments. Furthermore, both the unconfined compressive strength (UCS) and the stiffness moduli (initial tangent, Ei, and secant, Esec, evaluated from the experimental stress–strain responses) of soil mixtures increased significantly as a consequence of the joint effects of quarry fines and CKD treatment producing soil mixtures with desired values for performance in road pavement subgrades.
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    Residents' Water Needs in the Indigenous Core of Ibadan City, Nigeria.
    (ISOCARP, 2014-09-26) Ayangbile, O. A and Adeleye, B. M.
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    Waste disposal: Existing infrastructure and the emerging trend in Ibadan North Local Government Area, Ibadan, Oyo State. Responsive Built Environment.
    (Published by the Faculty of Environmental Designs and Management, Obafemi Awolowo University, Ile-Ife, Nigeria, 2015-03-12) Popoola Ayobami A., Ayangbile Oluwabukola A., Adeleye Bamiji M.
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    "Location".
    (Department of Urban and Regional.University of Ibadan, 2016-01-02) Ayangbile, O. A and Adeleye, B.M.
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    Coordinates
    (Department of Urban and Regional Planning, University of Ibadan, 2017-01-01) Adeleye, B.M., Popoola, A.A., Onyemenam, P. I. and Ndana, M.
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    Construction Micro, Small, and Medium Enterprises (CMSMEs) Innovations
    (Journal of Engineering, Project, and Production Management, 2019-10-04) Abel John Tsado , Winston W. M. Shakantu , & Alumbugu Polycarp Olaku
    : Innovation is at the core of micro, small and medium enterprises (MSMEs)/ construction micro, small, and medium enterprises (CMSMEs) world over. Be that as it may, the overwhelming sorts of innovation among enduring and effective CMSMEs, and the effects of such innovation(s) on the achievement of the CMSMEs is hazy. The purpose of this paper is to investigate the transcendent sorts of innovation among the successful construction micro, small, and medium enterprises. The examination utilized subjective research technique to exploratively decide the sorts of innovations. Recorded interviews comprised the exploration of information from 43 CMSMEs through 14 states out of the 19 states constituting northern Nigeria. While a semi-structured interview with open-ended questions was utilized to gather information through judgmental and snowballing examining procedure at stage 1 and 2 individually. Information was transcribe interpreted, open and axial codes examined and interpreted. The outcome uncover product innovation as the main type of innovation among different types of innovation and generally in charge of the accomplishment of the CMSMEs considered. The investigation improves the collection of learning regarding basic types of innovations within CMSMEs and proposes that effective CMSMEs give more consideration to product innovation to trigger their prosperity and different types of innovation. Moreover, the aftereffect of the examination proposed failing CMSMEs can endure when they focus on product innovation
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    Assessment of the Effect of Plan Shapes on Cost of Institutional Buildings in Nigeria
    (International Refereed Journal of Engineering and Science (IRJES), 2015-03-03) Saidu, Ibrahim , Alumbugu, Polycarp Olaku Abdulazeez Abdulmumin and Wasiu Adeniran Ola-Awo
    This research analyzed the effect of plan shapes on cost of multi-storey Institutional buildings in Nigeria. Data were collected from drawings and priced bill of quantities for 28 projects of existing institutional buildings in Kwara State. In order to determine the plan shape with the most effect, a descriptive method of analysis (bar chart) was used. It was found out that, in all the plan types (“A” Circular-shaped, “B” U-shaped, “C” L-shaped, and “D” Rectangular shaped building) observed for each of the building elements (Substructure, Frame work, Block work, Roof work, Services, Finishes) including the overall building cost, plan shape Type “A” (circular shaped buildings) were the most expensive with an average total cost of N225,959,924.75 Plan shape type “D”(the Rectangular shaped buildings) have the lowest average total cost of ₦ 87,76I,791.27.It was concluded that plan Type “A” (circular shaped buildings) were the most expensive with highest average cost, plan Type “B” and “C” (U and L shaped) were at the average while building Type “D” (Rectangular shaped building) has the lowest average cost. The study recommends that clients that might be considering embarking on the multi-storey institutional building development should bear in mind the cost effectiveness of each plan shape in order to avoid adverse cost consequences on the project.
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    Evaluation of Perception of Stakeholders on Key Performance Indicators for U.B.E Building Projects
    (Journal of Multidisciplinary Engineering Science and Technology (JMEST), 2015-03-02) Alumbugu, Polycarp Olaku, Abdulazeez, Abdulmumin, Saidu, Ibrahim, Ola-Awo, Wasiu Adeniran,Tsado Abel John
    —A project performance can be measured traditionally by three factors, which are co, time and quality. Researchers however argued that the measure of project success can no longer be restricted to the traditional indicators. Key performance indicators vary from project to project. Despite much work on the subject, there is no commonly agreed framework of performance measurement on projects. To bridge this gap, this research targets to investigate the perception of stakeholders on key performance indicators (KPIs) in the context of Universal Basic Education (U.B.E) building project in Niger state, Nigeria. The study explores key performance indicators in perspective of various stakeholders within (client, consultants, contractors, principal/teacher, parent, pupil/student and member of community) within U.B.E. Data for the study were sourced from a total of seventy (70) structured questionnaire administered to the stakeholders of the selected U.B.E primary school projects using the simple stratified sampling technique. The data collected were analyzed using the descriptive method comprising of the mean score and ranking methods. It was found out that the traditional measures of the iron triangle (on-time, under budget and according to specifications) are most criteria for measuring delivery of projects, it also shows that project executed by U.B.E are delivered within time, on budget and quality. It also revealed that stakeholders are satisfied with the UBE building project.
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    Household and Neighbourhood Responses to House Burglary in Ibadan
    (University of Cape Town, 2018-02-01) Popoola, A., Alabi, M., Ojo, A. & Adeleye, M.
    House burglary is a prevailing issue in Nigeria owing to the inefficiency of formal security institutions in dealing with incidences of urban household burglary. This study examines households and neighbourhoods’ responses to household burglary in Ibadan, Nigeria. In-depth interviews and household questionnaires were the primary data collection tools. A cross- sectional survey design was adopted while a multi-stage sampling technique was used to select 299 respondents. Analysis of Variance confirmed the research hypothesis which suggested that burglary crimes committed differ significantly among residential neighbourhoods (F=3.012). Burglary occurred mostly in houses that were accessed through footpaths. Furthermore, females reported witnessing burglaries more than males. Neighbourhood responses to burglary include the use of gates, private security outfits and local vigilante groups. Individual households relied on burglary proof windows and door; broken bottles and wire fencing for protection. The intensity of crime in suburban areas impacts residential relocation and property values. Neighbourhood planning and good housing design remain other means through which easy accessibility by burglars can be prevented. Keywords: House Burglary; Household Response; Neighbourhood Response; Ibadan
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    Geographical Information System (GIS) Based Analysis of Urban Trip Distribution Forecast of Bida Town
    (Lapai International Journal of Management and Social Sciences (LIJOMASS), 2010) Musa, Haruna D.; Mohammed Bala Banki
    The purpose of this research was to study the urban home trips distribution using the Geographic Information System (GIS) tool based on the mobility surveys conducted in Bida town in 2007. The pattern of trip distribution is a basic tool necessary for planning formation and implementation in the transportation system. The problem of transportation within a township can only be resolved when proper and effective information on transportation is available. Bida township will contribute immensely to the scarce knowledge if a base is available for transportation planning. A mobility survey was conducted with a structured questionnaire designed and administered at various defined destinations; questionnaires were collected in trip count, generation and attraction at each zone. The town is divided into four zones: Zone 1 (include the institutional areas consist of Federal Polytechnic and College of Administration and Business study(CABS), Zone 2 (include the Wadata/Local Government Area; the administrative area of Bida town), Zone 3 (Federal Medical Centre/School of Nurse Area; the zone consists of public institutions). The trip production and the relative attractiveness for days (Monday and Friday; the hours)in December 2009 are generated. The inter-zonal travel times were calculated using the gravity model. The research revealed that landuse is a determinant factor; there exists a high level of attractiveness in Eso FMC/School of Nursing and Bida Poly/Cabs, respectively. With Esso haven thee the highest level of attraction of 332.51(50.34%), being a commercial landuses, followed by institutions.