Design of Several Foundation Systems For Faculty of Optics

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Date
2010
Authors
Maysaa Qushou
Sama Ismail
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Abstract
 The lowest part of the structure generally is referred to as the foundation; its function is to transfer the load of the structure to the soil on which it is resting. A properly designed foundation transfers the load throughout the soil without overstressing the soil, both of which cause damage to the structure. Thus, geotechnical and structural engineers who design foundations must evaluate the bearing capacity of soils. Depending on the structure and soil encountered, various types of foundations are used and may be classified in two main groups, namely, shallow foundation and deep foundation. Shallow foundation is simply an enlargement of a load bearing wall or column that makes it possible to spread the load of the structure over larger area of the soil in soil with low load bearing capacity, the size of the foundation requires is impracticably large, in that case, it is more economical to construct the entire structure over a concrete pad, this is called a mat foundation. Deep foundation including pile and drilled shaft foundations are used for heavier structures when great depth is required for supporting the load. Piles are structural members made of timber, concrete, or steel that transmit their load into the subsoil, piles can be divided into two basic categories: friction piles and end bearing piles. In the case of friction piles, the superstructure load is resisted by the shear stress generated along the surface of the pile. In the end bearing pile, the load carried by the pile is transmitted as its tip to a firm stratum. This project will present design of several foundation systems of the Faculty of Optics Building. The Optics Building has seven stories and its plan area is about 1200 m for each story. The structural system is a typical structure of slabs, beams, columns and foundation system to carry columns loads. Columns loads are found by analyzing the structure with Software called SAP 2000 ver. 12. Tributary area method is also used for analysis and comparisons were made between tributary area method and analysis using SAP 2000.           
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