Predictive Model of Moment of Resistance for Rectangular Reinforced Concrete Section under Actions

Generally engineering design requires adequate data, good understanding of methods of analysis and ability to use them effectively and accurately for creative processes. A model is developed for predicting implications of various combinations of sectional dimensions in structural reinforced concrete elements. The method adopted is purely mathematical technique of modeling, concept and application. The paper thus aimed at increasing design understanding for effectiveness and precision to ensure safety in structural design. A concrete rectangular section of singly reinforced status was used as a case study. The section was analyzed from stress-strain relationship to formulate the governing equation.  This was simulated to describe the relationship between the variable parameters and predict the behavior of a rectangular section under loads. The section is specified by breadth b, total depth h and moment of resistance MR. Thus the adequate sectional dimension can be accurately selected for design. Keywords: Reinforced Concrete, Stress-Strain Relationship, Rectangular Section and Moment of Resistanc

British Standard and Euro Code: Model of Singly Reinforced Rectangular Concrete Under Actions

Upgrading are desired Changes on any standard in operation. Meanwhile context understanding are required to achieve positive impact on the subject system. In same vein, codes of practice are always revised and that users should be made to use the latest edition of any relevant standard. Thus a model is developed to describe the sectional analysis difference with predicting implications of various combinations of sectional dimensions in structural reinforced concrete elements with reference to the two codes.  The method adopted is purely mathematical technique of modeling, concept and application. Based on the previous behavioural knowledge of such using BS code, Okeniyi et al (2012), a concrete rectangular section of singly reinforced status was also used as a case study. The section was analyzed from stress-strain relationship to formulate the governing equations and the same was specified by breadth b, total depth h and moment of resistance MR. This was simulated to describe the relationship between the variable parameters and predict the behavior of a rectangular section under loads with reference to British Standard and Euro Code. The model, thus defines clearly sectional analysis difference increasing understanding for better structural design skill. Keywords: Reinforced Concrete, Stress-Strain Relationship, Rectangular Section and Moment of Resistance DOI: 10.7176/CER/12-6-05 Publication date:June 30th 202

Capacity and Quality Assessment of Awba River Basin

This study aims at determining the feasibility of a Mini Water Supply Scheme to meet the growing water needs of The Polytechnic, Ibadan community. The assessment focused on determination of population of the subject community vis-à-vis the location, discharge capacity and quality status of Oba river basin, being the only perennial stream within the community, seeking possible opportunities for capacity building in the areas water based developmental activities. The entire population of the community was obtained by enumeration method with 10years projection considered at a growth of 4 percent on yearly basis. Water budget was arrived at on the basis of per capita per day, in accordance with the United State specification. Raw water supply was obtained through impounding system of reinforced concrete chamber, which serves as an alternative to costly dam construction. Grid survey was carried out to determine the topographical nature along the stream axis at proposed location of the impounding house. Hydrological studies were carried out on the river to obtain its rate of flow and the harvestable volume of raw water at each month of a year. This was used to determine the size of chamber and the impounding hours before pumping. Physico-chemical analysis of the raw water was carried out and the results compared with that of W.H.O’s 1996 guide line for drinking water as to dictate the design of treatment plant and the recommendable chemical dosage. The study thus reveals that the available perennial stream within the community is a resource that could be utilized to alleviate the problem of acute water shortage and create better environment for research and other developmental activities of the institution. Key Words: Population, Raw Water, Capacity and Quality Assessment, Treatment