Roof Deck Poisson Ratio

I use ram structural system s frame module for my lateral analysis of steel framed buildings with the following parameters for this type of roof deck.

Roof deck poisson ratio.

When a stretching force is applied lengthwise to a solid the solid starts to stretch. μ ε t ε l 1 where. Poisson s ratio is a measure of the poisson effect that describes the expansion or contraction of a material in directions perpendicular to the direction of loading the value of poisson s ratio is the negative of the ratio of transverse strain to axial strain for small values of these changes is the amount of transversal expansion divided by the amount of axial compression. Where d ed 3 12 1 μ 2 is the flexural rigidity of the plate e is young s modulus of the plate µ is poisson s ratio w is the vertical deflection and q is the external uniform load.

For example if you have 4 inches of concrete above the flutes and want to use 0 35ig the effective thickness would be 0 35 4 1 4 inches. Poisson s ratio is the negative of the ratio of lateral strain transverse to the linear strain axial. For a composite deck the factor should be incorporated into the effective thickness that is defined with the deck properties. The ratio of the relative contraction strain transverse lateral or radial strain normal to the applied load to the relative extension strain or axial strain in the direction of the applied load.

Ram structural system ram modeler ram structural system ram steel ram structural system ram steel ram structural system tutorial. 0 30 same as steel elastic modulus. μ poisson s ratio. Vulcraft manufactures many different types of deck including roof deck floor deck composite floor deck and cellular deck.

During this stretching in the vast majority of cases the cross section of the material decreases poisson s ratio shows how the cross section of a deformable body changes under lengthwise stretching or compression. Poisson s ratio ν is often used to characterize the elastic properties of a material. The poisson s ratio express the relative contraction strain or transverse strain normal to the applied load to the relative extension strain or axial strain in the direction of the applied load. The ratio of this change is called poisson s ratio.

For full details about these or any of our products contact your local vulcraft office. Red status lights for lateral load cases in ram frame. Consider 1 1 2 vulcraft type b 20 ga design thickness 0 0358in. As with the example of a rubber band when we stretch the length axial the cross sectional width gets reduced transverse and vice versa.