The maximum span for a rigid beam is how many feet?

The maximum span for a rigid beam is how many feet?

• A. 75 Feet
• B. 100 Feet
• C. 125 Feet
• D. 150 Feet

Answer: (B)

In structural terms, how far a rigid beam can span is limited by how much bending and deflection the beam can safely endure under expected loads. The longer the span, the greater the bending moment and the potential for noticeable sagging. Beyond a certain span, you’d need a larger or deeper beam, or additional supports, to keep the structure safe and to meet fire-resistance requirements. In this context, the standard maximum span for a rigid beam is 100 feet, which represents the practical limit used in the scenario. If a beam would exceed that span, it typically requires intermediate supports or a different framing system to maintain safety.

In structural terms, how far a rigid beam can span is limited by how much bending and deflection the beam can safely endure under expected loads. The longer the span, the greater the bending moment and the potential for noticeable sagging. Beyond a certain span, you’d need a larger or deeper beam, or additional supports, to keep the structure safe and to meet fire-resistance requirements. In this context, the standard maximum span for a rigid beam is 100 feet, which represents the practical limit used in the scenario. If a beam would exceed that span, it typically requires intermediate supports or a different framing system to maintain safety.