plate girder

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plate girder

[′plāt ‚gərd·ər]
(civil engineering)
A riveted or welded steel girder having a deep vertical web plate with a pair of angles along each edge to act as compression and tension flanges.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

plate girder

A steel beam built up from vertical web plates and horizontal flange plates. See also: Beam
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

Plate girder

A beam built up of steel plates and shapes which may be welded or bolted together to form a deep beam larger than can be produced by a rolling mill (see illustration). As such, it is capable of supporting greater loads on longer spans. The typical welded plate girder consists of flange plates welded to a deep web plate. A bolted configuration consists of flanges built of angles and cover plates bolted to the web plate. Both types may have vertical stiffeners connected to the web plate, and both may have additional cover plates on the flanges to increase the load capacity of the member. Box girders consist of common flanges connected to two web plates, forming a closed section.

In general, the depth of plate girders is one-tenth to one-twelfth of the span length, varying slightly for heavier or lighter loads. On occasion, the depth may be controlled by architectural considerations.

Stiffeners, plates or angles, may be attached to the girder web by welding or bolting to increase the buckling resistance of the web. Stiffeners are also required to transfer the concentrated forces of applied loads and reactions to the web without producing local buckling.

Splices are required for webs and flanges when full lengths of plates are not available from the mills or when shorter lengths are more readily fabricated. Splices provide the necessary continuity required in the web and flanges.

McGraw-Hill Concise Encyclopedia of Engineering. © 2002 by The McGraw-Hill Companies, Inc.

plate girder, plate beam

A steel girder built up of plates and angles (or other structural shapes), welded or riveted together.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Transverse web stiffeners and shear moment inter action for steel plate girder bridges, Proceedings of the 7th International Symposium on Steel Bridges.
Shanmugam and Baskar (2006) extended this method to determine the ultimate shear capacity of straight composite plate girders. It was assumed that the ultimate shear capacity of straight composite plate girders ([V.sub.ult]) may be obtained as a sum of the shear resistance of bare steel plate girder ([V.sub.s]), as given in Eqn (1) and the contribution by concrete slab to the shear capacity ([V.sub.c]), i.e.:
The fifth example is a 454-m, steel plate girder bridge in the inland Pacific Northwest with a design acceleration of 0.15 g.
In a composite plate girder with transverse stiffeners spaced at a distance b along the span, consider a finite length, dx of the web panel near the support as shown in Figure 1(a).
After comparing 12 bridge alternatives, NCDOT selected a 97-ft wide, five-span steel plate girder bridge to cross Laurel Creek.