Investigation of Impact of Span Length and Variable Live Loading Conditions on Flat Slab Material Costs

Yasir Jari; Abdulrazak Abdulghafour

doi:10.17485/IJST/v16i4.2095

Article

Investigation of Impact of Span Length and Variable Live Loading Conditions on Flat Slab Material Costs

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v16i4.2095

Year: 2023, Volume: 16, Issue: 4, Pages: 299-308

Original Article

Investigation of Impact of Span Length and Variable Live Loading Conditions on Flat Slab Material Costs

Yasir Jari^1*, Abdulrazak Abdulghafour²

¹Graduate, Civil Engineering Department, Umm Al-Qura University, Saudi Arabia
²Associate Professor, Civil Engineering Department, Umm Al-Qura University, Saudi Arabia

*Corresponding Author
Email: [email protected]

Received Date:28 October 2022, Accepted Date:05 January 2023, Published Date:03 February 2023

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: This study investigates the optimization of reinforced concrete flat slabs and establishes a relationship between span, live load, and material costs. Methods: The study used the direct design method per Saudi Building Code limitations, iterative design, and pattern search methods to establish a mathematical model that prescribes the span-cost relationship. The study conducted variable live loading tastings and cost estimates on multiple flat slab panels with distinct dimensions. Findings: The results showed that slab material unit cost increases significantly with span while live load had little impact. Material costs included concrete, steel, and forms which compose 36%, 52%, and 12%, respectively of the total. Each increment in span by 1 meter raises slab material unit cost by 19% starting form 4 meters span as a baseline. Increasing live load by 1 kN/m2 increase cost by roughly 2% for square panels and 1% for rectangular ones. However, results proved that using 1:1 panel dimension is more economical than panels with 2:1 ratio. Novelty: The study provided a mathematical model to estimate flat slab cost more accurately in preliminary estimations before the design phase.
Keywords: Material Costs; Flat Slab Cost; Live Load Impact on Cost; Span Impact on Cost; Slab Unit Cost; Cost Optimization

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Copyright

© 2023 Jari & Abdulghafour. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)