Page 58 - Handbook of Structural Steel Connection Design and Details

Design of Connections for Axial, Moment, and Shear Forces

Design of Connections for Axial, Moment, and Shear Forces 43

Figure 2.2 Example 1, bracing connection design.

b. W14 109 brace checks:
(1) Bolt shear, bearing, and tearout: The 1999 AISC Specification
included for the first time a limit state that considers a bolt
tearing out through the edge of the connected material. This
requirement is carried forward into the 2005 AISC Specification.
The proper check is one that considers bolt shear, bearing, and
tearout for each bolt individually. The resistances of the indi-
vidual bolts are then summed to determine a capacity for the
bolt group.
The bolt shear strength has already been established as
31.6 kips per bolt.
The bearing strength per bolt is
r 0.75 2.4 1.125 0.525 65 69.1 kips
p
The bolt tearout capacity of the edge bolts at the brace web is
r 0.75 1.2 (2 0.594) 0.525 65 43.1 kips
p

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