Which 2 shapes have tapered flanges?

Which 2 shapes have tapered flanges?

• A. C and S shapes
• B. I and H shapes
• C. T and U shapes
• D. L and J shapes

Answer: (A)

Tapered flanges mean the flange part changes in width or thickness along the profile, narrowing toward the web rather than staying the same size straight across. The C-shape and the S-shape are the two profiles where that taper is part of their standard form, giving a lighter section with load paths that still resist bending where the flange meets the web. Other common profiles—like I- and H-beams with straight, parallel flanges, T and U shapes with their own straight or curved forms, and L or J shapes that emphasize corners rather than tapered flanges—don’t feature that gradual taper in their flanges. So, the shapes with tapered flanges are the C and the S.

Tapered flanges mean the flange part changes in width or thickness along the profile, narrowing toward the web rather than staying the same size straight across. The C-shape and the S-shape are the two profiles where that taper is part of their standard form, giving a lighter section with load paths that still resist bending where the flange meets the web. Other common profiles—like I- and H-beams with straight, parallel flanges, T and U shapes with their own straight or curved forms, and L or J shapes that emphasize corners rather than tapered flanges—don’t feature that gradual taper in their flanges. So, the shapes with tapered flanges are the C and the S.