Journals Proceedings

International Journal of Structural Analysis & Design

Cost of Reinforced Concrete Paraboloid Shell Footing

Author(s) : MOHAMMED S. AL-ANSARI

Abstract

The shell footings with different flatness ratio were analyzed and designed optimally to ACI code of design in order to minimize the total cost of the footing material that includes cost of concrete, cost of steel, and formwork cost. Shell crown displacement under the load is very important factor of safety in shell footing design. Shell footings displacements with different flatness ratio were small in magnitude and the best among them are the ones with high flatness ratios. The cost of shell footings with different flatness ratios compared well with the cost of conventional square footing with flatness ratio zero and it is more economical than conventional square footing in most cases for footings in poor soil. The process of computing optimized shell footing material cost presented in this paper is flexible and could be used for other codes of design by modifying optimization equations to estimate shell footings material cost. Numerical examples are presented to illustrate the validity of the process of computing optimized shell footing material cost for a desired axial load.

No fo Author(s) : 1
Page(s) : 111 - 119
Electronic ISSN : 2372-4102
Volume 1 : Issue 3
Views : 437   |   Download(s) : 158