Shear Stress

shear force

 

shear stress  ...caused by shear force

τcutting = V / A    (shear force / area on which the force acts) shear stress, τ - a stress that acts tangential to the surface "Cutting shear" is "direct shear" in the textbook.   macro micro

 

examples of bonded connections

 

examples of bolted connections

see M1.5,7,8 for bolt/pin shear

Missouri S&T teaching sculpture

Vicksburg museum

Memphis bridge

Fort Dodge bridge

American Airlines Flight 587

chain testing

more on bolted connections

 

examples of flanged connections

see M1.6 for flange shear

 

examples of punches, cutters, shears

see M1.9 for punching shear

 

examples of keyed shafts

see M1.10 for key shear

 

structural collapses due to shear

• Modern Marvels -- Engineering Disasters 12
  • punching-shear collapse claimed 26 lives due to rebar being placed 1" too low in concrete slab
  • punching-shear collapse claimed 14 lives when supports were removed from wet slab
     
• Harbor Cay Condominium
  • Engineer in Building Collapse Gives Up His Florida License
     
• Kansas City Hyatt Regency
  • skywalk gives way and claims 114 lives
  • Walkway Collapse
  • Panel Revokes Licenses Of Two Hyatt Engineers
  • Engineers Charged with Negligence in Kansas City Hotel Disaster

• 2000 Commonwealth Avenue, Boston
  • Four workers died after a failure on the roof instigated a progressive collapse all the way to the basement in the 16-story apartment building. The surviving workers' descriptions of the failure provide a textbook definition of punching shear.
  • floor slabs image
  • punching shear diagram
  • article
      
• more examples