Question

1. this structural shape is called a

a l channel or angle bracket
b c channel
c flat plate
d i beam

Explanation:

The shape shown has a cross - section in the form of a 'C'. An L - channel has an 'L' shaped cross - section, a flat plate is flat and not channel - like, and an I - beam has an 'I' shaped cross - section. A C channel has the depicted cross - sectional shape.

Answer:

B. C channel