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Steel Designers' Manual - 6th Edition (2003)
748 Design of connections
Table 26.8 Design checks for beam-to-beam fin plate connections
Check Description Design rule
no.
1 Essential detailing
requirements
See Fig. 26.19.
2 Capacity of bolt group
connecting fin plate to
The bearing capacity per bolt (Pbs) must be greater
than the resultant force on the outermost bolt due
web of supporting beam to direct shear and moment (Fs)
3a Plain end beams – For shear For bending
strength of the beam at The shear capacity of For long fin plates the
net section the beam (Pv) must be
greater than the
resistance of the net
section must be greater
reaction at the end of than the applied
the beam (Fv) moment (Fva)
3b Notched beam – shear For shear For bending
and bearing capacity of The shear capacity of The moment capacity of
the supported beam the beam (Pv) must be
greater than the
reaction at the end of
the beam at the notched
section (pyZ ) must be
greater than the applied
the beam (Fv) moment Fva
3c Notched beams – local Basic requirements for the notch – see section
stability of notched
beams restrained against
lateral torsional buckling
26.2.5.1.
3d Notched beams – overall See section 26.2.5.1 for checking the overall
stability of notched
beams unrestrained
against lateral torsional
buckling
stability of a notched beam
4 Strength of fin plate at For shear For bending
net section under The shear capacity of The moment capacity of
bending and shear the fin plate (Pv) must be
greater than the
the fin plate (pyZ ) must
be greater than the
reaction at the end of
the beam (Fv)
applied moment (Fva)
5 Lateral torsional buckling The lateral torsional buckling resistance moment
resistance of long fin
plates
of the fin plate (Mb) must be greater than the
moment due to the end reaction and the
distance a (Fva)
6 Strength of weld The leg length of the fillet weld must be greater
connecting fin plate to
supporting beam under
bending and shear
than 0.8 times the thickness of the fin plate
7 Local shear capacity of The local shear capacity of the supporting
supporting beam web beam (Pv) must be greater than half the sum of
the reactions at the ends of the beams either side
( Fv1 + Fv2)
of the supporting beam web .
2
Note: The design check numbers may not match the check numbers given in Ref 1.