Procedure 9-5 Shear Loads in Bolted Connections

Shear loads in bolted connections are classified as either Friction Type or Bearing Type . A brief definition is as follows  

A friction type connection is one in which the sole purpose of the bolts is to provide adequate tension such that the two plates being joined will not sHp. In this manner the bolts are not technically in shear, but solely in tension. High strength bolts must be used for friction type connections. The following factors are critical to the joint functioning as designed  

Blast cleaned, zinc rich paint (Class E or F) 

Blast cleaned, metaHzed zinc or alum (Class G or H) 

A bearing type connection is one in which the bolts are in shear because there is not significant enough friction in the joint to prevent slip. There are two major classifications of bearing type connections  

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