Browsing by Author "Girma, Hailemariam"

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    Guide Line for the Selection of Safe and Economical Types of Reinforced Concrete Foundation for Different Buildings Constructed on Expansive Soil of Addis Ababa
    (Addis Ababa University, 2016-10) Girma, Hailemariam; Teferra, Alemayehu (Professor)
    The selection of safe and economical types of reinforced concrete foundation is one of the challenges for professionals in current designing practice, and this issue is more complex for foundation design for different buildings that are intended to be constructed on expansive soils of Addis Ababa. Beside the concern of swelling pressure of expansive soils, the availability of precise foundation software, cost of construction, and variability of foundation design factors with uniqueness of the project are also among the factors that brought extra challenges on professionals to select the safest and economical foundation in different localities of Addis Ababa. In this research work, an attempt is made to develop a simple software using Programming language, MATLAB 2011, and visual basic ultimate studio 2015 for handling the above issues by applying seven main reinforced concrete foundations such as footing foundations, slab foundations such as slab-on-ground, uniform mat and ribbed mat foundations, straight bored pile, single and double-under-reamed pile foundation for different buildings ranging from one story to sixteen stories under four grouping. The expected input for this software are superstructure loads, swelling pressure, allowable/safe bearing capacity (based on UCS values and N-values from SPT readings), depth of moisture fluctuation and foundation determining factors like aspect ratio for dimensional factor and aspect ratio of load factor. With this research, it is believed that a considerable time would be saved in geotechnical investigation. A suitable guideline for the selection of safe and economical types of reinforced concrete foundation for different buildings constructed on expansive soil of Addis Ababa is proposed