Page 97 - Handbook of Structural Steel Connection Design and Details

Design of Connections for Axial, Moment, and Shear Forces

82 Chapter Two

Figure 2.15 Design by L weld method.

Web shear. The 132-kip vertical load between the gusset and the beam
flange is transmitted to the beam-to-column connection by the beam
web. The shear design strength is

R 1.0 0.6 0.305 13.7 50 125 kips 132 kips, no good
vw
To carry this much shear, a web-doubler plate is required. Starting at the
toe of the gusset plate, 132/33 4.00 kips of shear is added per inch. The
doubler must start at a distance x from the toe where 4.00x 125, x 31.0
in. Therefore, a doubler of length 34 31.0 2 in is required, measured
from the face of the end plate. The doubler thickness t required is 1.0
d
0.6 50 (t 0.305) 13.4 132, t 0.02 in, so use a minimum thick-
d d
3
ness / -in plate of grade 50 steel. If some yielding before ultimate load is
16
reached is acceptable, grade 36 plate can be used. The thickness required
3
would be t 0.02 50/36 0.028 in so a / -in A36 plate is also ok.
d 16
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