Which term describes a structural member with an elongated body and a hole at each end?

• A. Tie rod
• B. Bar
• C. Bolt
• D. Eye bar

Answer: (D)

An eye bar is the term that fits this description. The elongated bar carries load and the holes at each end are precisely there to accept pins or bolts, creating a pin-connected joint that allows a bit of rotation while transferring force. This design is common in bridge connections where components must articulate and transmit tension or compression efficiently. The word “eye” signals the hole at the end of the bar, distinguishing it from a plain bar or a bolt. A tie rod is typically a slender member used in tension with threaded ends rather than holes at both ends, and a bolt is a fastener rather than a structural member.