What does a beam primarily do in structural systems?

• A. Delivers loads perpendicularly to their imposed load
• B. Carries vertical only
• C. Connects utilities
• D. Anchors to earth

Answer: (A)

Beams are the main horizontal supports that span between structural supports and carry loads across that span. They take loads that are applied across their length—typically vertical gravity loads—and transfer them to the ends (supports) so the structure can resist bending and shear. In other words, the load path runs along the beam from where the load is applied to the supports, with the beam bending to accommodate that transverse force. This is why describing a beam as delivering loads perpendicular to the imposed load captures its essential role: turning vertical, across-the-span loads into reactions at the supports. Beams don’t connect utilities or anchor to the ground in their primary function.