ce 470 lateral brace
DESCRIPTION
Lateral BraceTRANSCRIPT
![Page 1: Ce 470 Lateral Brace](https://reader031.vdocuments.us/reader031/viewer/2022020310/55cf8d2c5503462b1392ad35/html5/thumbnails/1.jpg)
LATERAL SUPPORT
SLIDE SHOW
Modified for use in CE470, Purdue University, April 2004
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Fully unsupported beams. The unbraced length is equal to the entire length of the member.
![Page 3: Ce 470 Lateral Brace](https://reader031.vdocuments.us/reader031/viewer/2022020310/55cf8d2c5503462b1392ad35/html5/thumbnails/3.jpg)
These beams are continually supported with the deck that is mechanically attached with screws or welds.
![Page 4: Ce 470 Lateral Brace](https://reader031.vdocuments.us/reader031/viewer/2022020310/55cf8d2c5503462b1392ad35/html5/thumbnails/4.jpg)
During construction, these girders are fully unsupported. The unbraced length is the full length of the girder.
Once the joists are placed in position and attached,
the unbraced length is reduced to the joist
spacing.
![Page 5: Ce 470 Lateral Brace](https://reader031.vdocuments.us/reader031/viewer/2022020310/55cf8d2c5503462b1392ad35/html5/thumbnails/5.jpg)
Bracing is not only accomplished by joists. Here, beams are used as blocking and spaced to provide the necessary
lateral support.
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Similarly, for the Chemical Engineering Building addition (Purdue), the beams have no lateral support during placement of the metal deck. The girders, meanwhile, have an unbraced
length corresponding to the spacing of the beams.
![Page 7: Ce 470 Lateral Brace](https://reader031.vdocuments.us/reader031/viewer/2022020310/55cf8d2c5503462b1392ad35/html5/thumbnails/7.jpg)
Another image of placement of metal deck for the Chemical Engineering addition.
![Page 8: Ce 470 Lateral Brace](https://reader031.vdocuments.us/reader031/viewer/2022020310/55cf8d2c5503462b1392ad35/html5/thumbnails/8.jpg)
The deck is attached to the beams with puddle welds. Shear studs are also welded in place so that the floor slab and beam
will act as a composite section in flexure.
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These beams are now fully laterally supported.
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Lateral bracing must be used for any member loaded in bending, including those that are curved or inclined.