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Steel Designers' Manual - 6th Edition (2003)
798 Worked examples
Shear capacity of the net section
Subject Chapter ref.
No. 3
WEB CLEAT CONNECTION
Design code Made by DBM Sheet no.
BS 5950 Checked by BD
The effect of bolt holes on the shear capacity of the section need not
be considered provided that:
A
v , net
where Av,net is the net shear area after deducting bolt holes 6.2.3
Ke is the effective net area coefficient
Av,net = 0.9A - nDht
where n is the number of bolt holes
Dh is the diameter of the hole
t is the thickness of cleat
\ Av,net = 0.9 ¥ 2400 - 4 ¥ 22 ¥ 8mm 2
= 1456 mm 2
085 . Av
0. 85 ¥ 2160
=
= 1530 mm
K 12 .
e
. Av
≥
K
085
1456 < 1530
Therefore the effect of bolt holes must be taken into account.
The shear capacity of the net section is given by the following
expression:
P v = 0.7pyKeAv,net
for grade S275 steel K e = 1.2
0. 7 ¥ 275 ¥ 1. 2 ¥ 1456
\ Pv= kN
3 10
= 336 kN
336 kN > 92.5 kN
e
Shear capacity of angle cleat at the net section is adequate.
2
26
4
6.2.3
3.4.3