This study investigates the optimum use to which a number of wells, sunk for water supply to the Ipaja Housing Estate in Lagos State could be put. The study is in two parts. The first part involves graphical analysis of the available pumping test data from sixteen wells located within the estate to determine the hydraulic characteristics of the und... Continue Reading
This paper reports the investigation on the reliability levels implicit in the BS8110 requirements, probability-based optimum design and sensitivity tests for singly reinforced continuous beams. These are accomplished with the aid of the modern reliability analysis (First-Order Reliability Integration Scheme- F0RM5, Gollwitzer, et al,1988) and a No... Continue Reading
This study investigates the settling characteristics of the raw water of Kubanni Dam at the main campus of Ahmadu Bello University, Zaria. The investigation included plain sedimentation and sedimentation of coagulated water samples using aluminium sulphate (alum) as coagulant. Coagulation and flocculation tests were performed by the batch method in... Continue Reading
This study is concerned with the investigation of strain-rate effects on shear strength characteristics of saturated compacted Fadama Clay. The experimental program consisted of consolidated undrained triaxial test with controlled strain-rate. The rates of strain adopted are 0.0024, 0.006, 0.012 and 0.03 in/min. (0.08, 0.2, 0.4 and 1.0 %/min., resp... Continue Reading
The Comparisonof Speed, cost and^accuracv of traversing usinq EDM, ODM and Steel tape A built-up area (Faculty of Enqineerinq) within the Ahmadi Bello University. Samaru Campus was traversed emplovinq theodolite with three methods of linear measurements. The obiective was to comparatively and statistically analyse the computed results of each of th... Continue Reading
The project is a study of the physical properties of sandcrete hollow blocks produced in Benue State for the purpose of ascertaining their quality. Following a careful site survey of thirty block industries across the state, five block industries were chosen for assessement and about fifty blocks were randomly selected from each of them. Majority o... Continue Reading
In this investigation, the effect of season, time of the day and topography has been examined. Two lines, one on water of length 1098.650 meters and the other 1287.05 meters on land were selected for the study. Coefficient of refractions on these two lines for different time of the day - 0800 hours to 1600 hours and for different seasons - dry and ... Continue Reading
The problems of organization to meet the rising tide of traffic congestion, patron complaint and increased costs appear, for some time now, to characterize the operation of vehicular toll collection at the Lagos - Ibadan expressway toll booth. It is the principal purpose of this research to study the weekend peak traffic delays at this facility by ... Continue Reading
Various approaches for computing cross sectional areas in earthworks are treated. Proofs of different formulae in the calculations are given, including some examples on the applications. Each method is analysed with sufficient depth in order to easily infer its merit and limitations. The methods, considered comparatively, are synthesized and their ... Continue Reading
An investigation into the development of sheet steel groundcoat enamel from local raw materials was carried out. These local raw materials included: feldspar, quartz, magnesite, whiting, baryte and manganese dioxide. Several formulations were made. Of the five formulations that yielded best performance properties, enamel B had the highest local inp... Continue Reading
Monthly water levels for four years in Lokko river were studied statistically using the time series theory, and an ARMA (1.1) model was identified as suitable to describe the data. An estimation model was developed, the results obtained were found to be satisfactory, except in the rainy season when the error could be as high as 37 percent on the av... Continue Reading
Reliability and economy are inherently competing demands; the study of which is becoming an increasing concern for the designers of electric transmission line structures and more generally to the profession of Structural Engineering. The work covered in this study deals with the assessment of the reliability (safety) levels of the prestressed elect... Continue Reading
Water is a fundamental element in the economic and social development of any country. A survey of surface water development in the Upper Benue Basin is made here in and availability of necessary data for water resources development discussed. A set of average monthly Temperature and Rainfall data have been used to estimate monthly streamflow values... Continue Reading
A land use classification has been developed for the inventory of land use in a Nigerian forest area, Sabon Gida Ora, using large scale aerial photography. The dot grid method of sampling covering 14% of the area is used in estimating the various land use categories. Bonnor (1975) and Kolbl and Trachsler (1980) formula are used in estimating the er... Continue Reading
The project produces a statistical computer package for analysis of survey data. The computer programes are sequentially developed to cover statistical concepts such as, measure of central tendency, measures of dispersion, graphical presentation of data (Histogram, Stemplot, Boxplot, Frequency Table, Scatter Diagram etc.); probability functions and... Continue Reading