What is the difference between a beam and a girder?

What is the difference between a beam and a girder?

• A. Girder is larger
• B. Beams are taller
• C. Beams are heavier reinforced
• D. Girders span more

Answer: (A)

The main idea is how the members function in a framing system: girders are the larger, main supports that carry the loads from several smaller members and transfer them to the columns, while beams are the smaller members that carry floor or deck loads to those girders or supports. Because girders must handle heavier loads over longer spans and support multiple beams, they are designed larger and deeper. That’s why the statement that a girder is larger best captures the difference. Beams aren’t defined by being taller or heavier in general; their size and weight depend on the specific design, but the role of carrying the heavier, primary loads makes girders the larger members.

The main idea is how the members function in a framing system: girders are the larger, main supports that carry the loads from several smaller members and transfer them to the columns, while beams are the smaller members that carry floor or deck loads to those girders or supports. Because girders must handle heavier loads over longer spans and support multiple beams, they are designed larger and deeper. That’s why the statement that a girder is larger best captures the difference. Beams aren’t defined by being taller or heavier in general; their size and weight depend on the specific design, but the role of carrying the heavier, primary loads makes girders the larger members.