A rigid beam can span how many feet?

A rigid beam can span how many feet?

• A. 50 Feet
• B. 100 Feet
• C. 150 Feet
• D. 200 Feet

Answer: (B)

Rigid beam behavior relies on fixed, moment-resisting ends. That rigidity lets the beam carry bending moments, reducing deflection and allowing a single member to span farther than a simple, pinned beam. In standard construction concepts taught for Fire Inspector 1, a single rigid beam is commonly treated as capable of spanning about 100 feet. Spans of 150 or 200 feet would require intermediate supports or a different structural system, while 50 feet is shorter than the typical maximum for a rigid, moment-resisting member. So 100 feet is the best answer.

Rigid beam behavior relies on fixed, moment-resisting ends. That rigidity lets the beam carry bending moments, reducing deflection and allowing a single member to span farther than a simple, pinned beam. In standard construction concepts taught for Fire Inspector 1, a single rigid beam is commonly treated as capable of spanning about 100 feet. Spans of 150 or 200 feet would require intermediate supports or a different structural system, while 50 feet is shorter than the typical maximum for a rigid, moment-resisting member. So 100 feet is the best answer.