Loads
•What are the two main types of loads on a beam?
Dead load and live load
•What is beam deflection?
The vertical bending/sagging of a beam under load
•A beam supported at both ends is called what?
Simply supported beam
•Beam failure due to deflection is called what?
deflection failure
•What professionals typically design beams?
Structural engineers
•A bookcase placed on a floor beam is what type of load?
Live load
•Where does maximum bending occur in a simply supported beam with a center load?
Mid-span
•A beam fixed at one end and free at the other is called what?
Cantilever beam
•What internal force causes sliding failure in beams?
Shear force
•What happens when a non-load-bearing wall is mistakenly assumed to be removable?
Structural sagging or failure may occur
•What type of load is the weight of the beam itself?
Dead load
•What happens to deflection as span increases?
It increases significantly
•Which support condition is most common in buildings?
Simply supported
•What internal force causes bending failure in beams?
Bending moment
•Why are steel beams often shaped like an “I”?
To maximize strength while minimizing material use
•A heavy HVAC unit placed at one point on a beam is called what type of load?
Concentrated load
What part of a beam is in tension during bending?
Bottom fibers (for a typical simply supported load)
Which beam type usually has the highest bending at the fixed end?
Cantilever beam
•Simple construction definition, a beam fails when?
when the applied loads exceed its ability to resist bending, shear, or deflection within safe limits.
• What is one major impact of excessive beam deflection in buildings?
Cracked drywall, flooring issues, or ceiling damage
•How does a distributed load differ from a point load?
It is spread along the length of the beam rather than concentrated at one point
•Why is beam depth more effective than beam width?
Depth increases stiffness much more efficiently (greater resistance to bending)
•: How do fixed supports affect beam performance compared to simple supports?
They reduce deflection and increase stiffness
Simple construction definition, what is the neutral axis in a beam?
The neutral axis is the line inside a beam that does not stretch or compress when the beam bends
•Why must construction managers understand beam behavior?
To prevent costly structural errors and coordinate safe construction sequencing