camber limit for steel beam 1

[hamedthelord]

Is there any limitation for camber in steel beam?
we know limitation for deflection, but if we made camber does the code have limit for the camber value?

 

[tempeng]

For a simple deviation from the intended curve at mid-span I use L/1000 or 6 mm, whichever is greater. Or do you mean is there a maximum radius a beam can be curved to, depending on section size?

 

[MotorCity]

There is no code limitation on camber that I am aware of, its a serviceability issue. Typically, we camber beams and trusses for all or a percentage of the dead load deflection. A good rule of thumb is 1/8" camber for every 10' of span. If you over camber, you can create other issues with cover over rebar and headed studs, floor topping thickness, etc.

 

[SlideRuleEra]

AISC has published a number of recommendations for cambering in their "Modern Steel Construction" magazine. Here are a couple of links:

Modern Steel Construction - July 2006

Modern Steel Construction - September 2004

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