Which notation indicates equal legs in a steel angle?

Which notation indicates equal legs in a steel angle?

• A. L 3-1/2 x 3-1/2 x 1/4
• B. L 3 x 4 x 1/2
• C. L 2 x 2 x 1/4
• D. L 5 x 5 x 1/8

Answer: (A)

In an angle notation, the two numbers before the last one are the leg lengths. When those two leg lengths are the same, the angle has equal legs. The notation L 3-1/2 x 3-1/2 x 1/4 shows both legs as 3-1/2 inches, so it indicates an equal-leg angle, with a thickness of 1/4 inch. This is the standard way to denote an equal-leg angle in structural steel.

In an angle notation, the two numbers before the last one are the leg lengths. When those two leg lengths are the same, the angle has equal legs. The notation L 3-1/2 x 3-1/2 x 1/4 shows both legs as 3-1/2 inches, so it indicates an equal-leg angle, with a thickness of 1/4 inch. This is the standard way to denote an equal-leg angle in structural steel.