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Steel Designers' Manual - 6th Edition (2003)
792 Worked examples
Check 9 – Structural integrity – supported beam
For tension
Subject Chapter ref.
No. 2
FIN PLATE CONNECTION
Design code Made by DBM Sheet no.
BS 5950 Checked by BD
The basic requirement is that the tension capacity of the supported
beam web must be greater than the tie force.
Tension capacity of the beam web ≥ Tie force
For tension the following checks should be considered:
• net tension capacity
• local tension capacity
• bearing capacity
Net tension capacity
The net tension capacity of the beam’s web is given by the following
expression:
Pt = pyAe
For the notched section
A = K ( A - nD t)
e e g h
26
17
4.6.1
where Ag is the gross area of the notched beam
Ke = 1.2 (for S275 steel) 3.4.3
Dh = 22 mm
n = 4
t = 7.6 mm
Ag = 4868.7 mm 2
Ae
= 1. 2( 4868. 9 - 4 ¥ 22 ¥ 7. 6)
2
= 5802. 4 mm > Ag
275 ¥ 4868. 7
Pt= kN
1000
= 1338. 9 kN
1338.9 kN > 75 kN
Therefore the net tension capacity of the web is adequate.