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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 />

558 Trusses<br />

I I II<br />

I<br />

II<br />

I<br />

(a)<br />

(b)<br />

H<br />

I<br />

LH<br />

L1T<br />

11+1<br />

p<br />

19.9.3 Connections<br />

(c)<br />

Fig. 19.8 Typical details of Vierendeel girders: (a) typical forms, (b) welded connections,<br />

(c) bolted connections<br />

Vierendeel girders have rigid joints with full fixity and so the connections must be<br />

of the type which prevents rotation or slip of the incoming members, such as welded<br />

or friction-grip bolted connections. Welded connections are usually the most efficient<br />

and compact although undesirable if the connections are required to be made<br />

on site. Normally site splices are bolted for economy. For very large Vierendeel<br />

girders delivered and erected piecemeal, fully bolted connections are normally used.<br />

For member and joint efficiency the ends of the verticals are often splayed. This is

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