Cambering a beam vs changing beam size?

4th year structural engineering student here!

In a project I am working on I have found that the dead load deflection on a W18x55 girder will be greater than both 1in and L/360. This means that I either have to camber the girder or increase the size. My question is which one is more economical? What would typically be done in a real world scenario? FYI I would have to camber the girder 1 in to pass AISC recommendations.

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