Question

1. this structural shape is called a

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

Explanation:

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

Answer:

D. C channel