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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 />

The full bearing value of a bolt through a connected part cannot be developed if<br />

the end distance is less than 2D. For end distances between 1.4D and 2D the bearing<br />

value is proportionally reduced. The minimum end distance for the full bearing<br />

value in the case of parallel shank HSFG bolts is 3d (see below).<br />

Maximum requirements (see Fig. 23.2)<br />

Centres of fasteners in the direction of stress 14t<br />

where t is the thickness of the thinner element.<br />

Edge distances<br />

Distance to the nearest line of fasteners from the edge of an unstiffened part<br />

11te<br />

In corrosive environments<br />

Centres of fasteners in any direction 16t or 200 mm<br />

Edge distances 4t + 40 mm<br />

d = fastener diameter<br />

D = hole diameter<br />

t = thickness of the thinner outside ply<br />

16t or 200 mm<br />

in any direction<br />

in corrosive<br />

environment<br />

14t in the direction of the stress<br />

1 4t in the direction of the stress<br />

Fig. 23.2 Maximum dimensions (see Table in Appendix)<br />

Geometric considerations 675<br />

iit<br />

or<br />

40 mm + 4t in corrosive<br />

conditions

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