Camber for a beam
Camber for a beam
(OP)
Hello,
Let's say I have a beam that is 20' long with a DL deflection of 1" and LL deflection of 1/2". I will specify a camber of 1.5" on my plans. My question is how do I check the LL or TL deflection for a scenario where LL limit is l/360 and TL is l/240. Do I just make sure that the LL deflection is within l/360 limit?
Thank You,
Victor.
Let's say I have a beam that is 20' long with a DL deflection of 1" and LL deflection of 1/2". I will specify a camber of 1.5" on my plans. My question is how do I check the LL or TL deflection for a scenario where LL limit is l/360 and TL is l/240. Do I just make sure that the LL deflection is within l/360 limit?
Thank You,
Victor.






RE: Camber for a beam
Is it concrete or steel? Concrete deflection estimates are likely to be more inaccurate, especially if you are using code approximations or some FEM software to calculate them, and over compensating can also be a problem.
Is the deflection limit for visual deflection or damage to attached components.
Pre-camber will only improve visual deflection. It will have no effect on damage to attached components as it only affects the final deflected position, not the amount of movement that is experienced after a certain amount of loading is applied.
RE: Camber for a beam
RE: Camber for a beam
An excellent article on beam cambering can be found in the July 2006 issue of Modern Steel Construction magazine (www.modernsteel.com).
RE: Camber for a beam
http://msc.aisc.org/globalassets/modern-steel/stee...
When I am working on a problem, I never think about beauty but when I have finished, if the solution is not beautiful, I know it is wrong.
-R. Buckminster Fuller
RE: Camber for a beam
RE: Camber for a beam
RE: Camber for a beam