When a load is placed on a truck with a C-channel,ladder frame,which ONE of the following is true of the C-channel rails?
A) neutral fiber is under compressional force
B) upper flange is under tensional force
C) lower flange is under tensional force
D) the entire rail is under compressional force

Question

Quizplus · Accepted Answer

The lower flange of a C-channel rail is under tensional force when a load is placed on a truck. This is because the load causes the frame to bend, putting the lower part of the channel (the lower flange) in tension, while the upper part is in compression.

When a Load Is Placed on a Truck with a C-Channel,ladder