2.21Shear Corrections

Both flexural and shear deformations may be considered. Flexural deformations are more significant in members with large shear span-to-depth ratios (long members), while shear deformations are more significant in members with small shear span-to depth ratios (short or stocky members).

For most cases, shear deformations can be ignored. However, in members such as shear walls or deep beams where the depth of the member is significant in comparison to its shear span (M/V), shear deformations become more significant. Shear deformations are based on the effective shear area, As, which is equal to the area of the member cross section, A, divided by the shear shape factor, B. Shear shape factors are presented in Figure 2-11.

 

Figure 2.11 Shear Correction Shape Factors