A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of construction adhesive and joist variability on the deflection behavior of commercial wood floors
In this study, a systematic evaluation of floors, consistent with the material and geometric properties and loadings found in commercial flooring applications (henceforth referred to as commercial floors), was undertaken to evaluate the effect of two key variables on structural behavior. These variables are: central tendency and variation associated with joist modulus of elasticity (MOE) and the presence of elastomeric construction adhesives (ECAs) in wood floor construction. A total of 19 440 virtual structural floors of a geometry and material configuration consistent with those used in commercial construction (commercial floors) throughout North America was numerically analyzed to determine deflection characteristics under a constant uniformly distributed load of 4.55 kPa. The intent of these analyses was to determine the effect of joist variability on the deflection behavior of floors with and without elastomeric construction adhesive (ECA) between sheathing and joists. The joist property (modulus of elasticity, MOE) was allowed to vary in a systematic fashion between 8.62 and 22.4 MPa in increments of 1.72 MPa. In addition, the variability of the joists (at each value of MOE) varied between coefficient of variation (COV) values of 0.025 to 0.150 in increments of 0.025. One hundred eighty floors were evaluated with and without ECAs at each mean MOE value and at each COV value for the joists. All other sheathing and connector properties remained constant. The results indicated that the contribution of the ECA to reducing floor deflection under uniformly distributed loads was dependent in large part on the mean stiffness of the floor joists and to a much lesser extent on the COV of the joists. For joists of lower stiffness, the contribution of ECA had a more pronounced effect on mitigating the floor deflection level. Reductions of nearly 10 % were realized when the mean joist MOE was 8.62 MPa. For floors made with stiffer joists (mean MOE = 22.4 MPa), floor deflections were reduced by only about 5.5 % when adhesive was used. The presence of ECA between joist and sheathing did not have much effect on reducing the variability of floor deflection behavior.
Effect of construction adhesive and joist variability on the deflection behavior of commercial wood floors
In this study, a systematic evaluation of floors, consistent with the material and geometric properties and loadings found in commercial flooring applications (henceforth referred to as commercial floors), was undertaken to evaluate the effect of two key variables on structural behavior. These variables are: central tendency and variation associated with joist modulus of elasticity (MOE) and the presence of elastomeric construction adhesives (ECAs) in wood floor construction. A total of 19 440 virtual structural floors of a geometry and material configuration consistent with those used in commercial construction (commercial floors) throughout North America was numerically analyzed to determine deflection characteristics under a constant uniformly distributed load of 4.55 kPa. The intent of these analyses was to determine the effect of joist variability on the deflection behavior of floors with and without elastomeric construction adhesive (ECA) between sheathing and joists. The joist property (modulus of elasticity, MOE) was allowed to vary in a systematic fashion between 8.62 and 22.4 MPa in increments of 1.72 MPa. In addition, the variability of the joists (at each value of MOE) varied between coefficient of variation (COV) values of 0.025 to 0.150 in increments of 0.025. One hundred eighty floors were evaluated with and without ECAs at each mean MOE value and at each COV value for the joists. All other sheathing and connector properties remained constant. The results indicated that the contribution of the ECA to reducing floor deflection under uniformly distributed loads was dependent in large part on the mean stiffness of the floor joists and to a much lesser extent on the COV of the joists. For joists of lower stiffness, the contribution of ECA had a more pronounced effect on mitigating the floor deflection level. Reductions of nearly 10 % were realized when the mean joist MOE was 8.62 MPa. For floors made with stiffer joists (mean MOE = 22.4 MPa), floor deflections were reduced by only about 5.5 % when adhesive was used. The presence of ECA between joist and sheathing did not have much effect on reducing the variability of floor deflection behavior.
Effect of construction adhesive and joist variability on the deflection behavior of commercial wood floors
Einfluß der verwendeten Klebemittel und Holzträger auf das Durchbiegungsverhalten von kommerziellen Holzböden
Pellicane, P.J. (author) / Robinson, G. (author)
Journal of Testing and Evaluation ; 26 ; 609-616
1998
8 Seiten, 9 Bilder, 1 Tabelle, 5 Quellen
Article (Journal)
English
| British Library Online Contents | 1998
British Library Online Contents
| British Library Online Contents | 1997