The term "ISWB 450" likely refers to an Indian Standard Wide Flange Beam with a designation of 450. The shear area of a beam depends on its dimensions and properties, including its shape, size, and material composition. To calculate the shear area of an ISWB 450 beam, you would need specific geometric information about the beam's cross-sectional dimensions. The shear area is used in structural analysis to determine the beam's capacity to resist shear forces.
If you have the exact dimensions of the ISWB 450 beam, I can assist you in calculating its shear area.