Statistical Analysis of Ultimate Deflection and Load Assessment for One–Way Voided Slabs under Static Loads
DOI:
https://doi.org/10.31185/wjes.Vol14.Iss2.733Keywords:
Stepwise regression, Fitted line plot method, One-way, Void slabs, Utimate deflectionAbstract
In this study, the ultimate load and deflection formulas for one-way voided slabs subjected to static point loads were determined through statistical analysis. A comprehensive empirical database of a number of void geometries and design parameters was compiled from the published literature. The experimental data were statistically analyzed by the stepwise regression technique in order to create prediction equations for ultimate load and deflection. This leads us to obtain appropriate equations for engineers to accurately predict the one-way voided slab's structural response with a determination coefficient (R²) of 0.99 at the ultimate deflection formula and 0.87 at the ultimate load formula. Furthermore, the fitted line plot method was also used to provide several equations to be compared with the equations of stepwise regression. The comparison revealed that the stepwise regression equations provide the most accurate prediction of ultimate load and ultimate deflection. Further, the Pearson coefficient of correlation was also determined and revealed that the association between the variables and ultimate load and deflection varied from moderate to weak or revealed no significant association.
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