Open AccessEffects of Opening on Load Carrying Capacity of Reinforced Concrete Slabs: Analytical Study
Author(s) -
Waleed Khalid Hadi,
Majid Muttashar
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/881/1/012043
Subject(s) - slab , square (algebra) , structural engineering , finite element method , aspect ratio (aeronautics) , field (mathematics) , materials science , engineering , mathematics , geometry , composite material , pure mathematics
Most often cut an opening/s in existing concrete slab is essential because of late design requirements. The shape and size of the openings should be chose carefully. While experimental investigation and finite element analysis are difficult to conduct by field engineers, developing a simplified analytical method is important. This study presents an analytical method to examine the effect of opening on the area load capacity of square and rectangular slabs. Two factors were involved in the analysis to take in the account the shape of the slab and the opening. The aspect ratio between the long and short dimensions of slab mentioned by the variable (β), while the aspect ratio between the dimensions of opening is mentioned by the variable (α). The results show that openings have a significant effect on the area load capacity of concrete slabs. In addition, square openings have less effect on the load capacity of rectangular slabs, whereas, rectangular openings have a significant effect on the area load capacity of square slabs. Field engineers can use the presented equations in this study easily and effectively where an opening is required in an existing slab.