Research Article Open Access

Decision Making and Predicting the Cost for the Optimal Structural System of Multi-Story Buildings

Hosam Elhegazy1, Ahmed Ebid1, Ibrahim M. Mahdi1, S.Y. Aboul Haggag2 and Ibrahim Abdel Rashid2
  • 1 Future University in Egypt, Egypt
  • 2 Ain Shams University, Egypt


There are numerous structural lateral systems used in multi-story buildings design such as the shear wall, frame system, framed with core, dual systems and superframes, etc. Additionally, the system of slabs such as (Solid Slab, Flat Slab, Flat plates, Hollow blocks, ... and Waffle Slabs). Generally, the structural systems of multi-story buildings are considered to be different types. Multi-story buildings are commonly used in residential, commercial and administrative projects; therefore, determining the structural system with minimum cost is the top priority of the structural designer. This research aims to introduce recommendations for the optimum structural system for a multi-story Reinforced Concrete (R.C.) building from a perspective of direct cost to help decision-makers in the preliminary design for choosing the optimum structural system. This paper outlines the development of charts to predict optimal structural system costing, using the status of early conceptual design as the charts input. In order to achieve that goal, a parametric study was carried out using 27 RC buildings with several stories ranging between 5 to 50 floors and grid spacing ranged between 6.0 to 12.0 m. Three floor systems were considered which are solid, ribbed and flat slabs.

American Journal of Engineering and Applied Sciences
Volume 14 No. 2, 2021, 152-161


Submitted On: 12 August 2019 Published On: 7 September 2021

How to Cite: Elhegazy, H., Ebid, A., Mahdi, I. M., Haggag, S. A. & Rashid, I. A. (2021). Decision Making and Predicting the Cost for the Optimal Structural System of Multi-Story Buildings. American Journal of Engineering and Applied Sciences, 14(2), 152-161.

  • 1 Citations



  • Structural Optimization
  • Structural System
  • Multi-Story Buildings
  • RC Buildings
  • Lateral Loads Resisting System
  • Decision Making
  • Cost Optimization