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Steel Designers Manual - TheBestFriend.org

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This material is copyright - all rights reserved. Reproduced under licence from The <strong>Steel</strong> Construction Institute on 12/2/2007<br />

To buy a hardcopy version of this document call 01344 872775 or go to http://shop.steelbiz.<strong>org</strong>/<br />

<strong>Steel</strong> <strong>Designers</strong>' <strong>Manual</strong> - 6th Edition (2003)<br />

788 Worked examples<br />

Subject Chapter ref.<br />

No. 2<br />

FIN PLATE CONNECTION<br />

Design code Made by DBM Sheet no.<br />

BS 5950 Checked by BD<br />

Check 7 – Supporting beam – local capacity (with one supported beam)<br />

The basic requirement is that the local shear capacity of the supporting<br />

beam web should be greater than the end reaction.<br />

Pv ≥ Fv<br />

The following two modes of failure should be considered:<br />

• Local shear failure of the supporting beam web<br />

• Punching shear capacity<br />

Local shear failure (beam web)<br />

The local shear failure is given by the following expression:<br />

py = 275 N/mm 2<br />

Av = 0.9A mm 2<br />

where A is local shear area<br />

A = ltw<br />

Pv = 0.6pyAv<br />

l is the depth of fin plate<br />

tw is web thickness of supporting beam<br />

l = 320 mm<br />

tw = 10.6 mm<br />

Av = 0.9 ¥ 320 ¥ 10.6 mm 2<br />

= 3052.8 mm 2<br />

0. 6 ¥ 275 ¥ 3052. 8<br />

\ Pv= kN<br />

1000<br />

= 503. 7 kN<br />

503.7 kN > 55 kN<br />

Therefore the local shear capacity is adequate.<br />

26<br />

13<br />

4.2.3

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