Camber Length Minimum

[KBVT]

I have always used a 30 foot minimum on beam length in order to specify any camber. I believe this requirement appeared in the Manual of Standard Practice in the 9th edition.

I cannot find a length minimum in the new 13th Edition specification or Code of Standard Practice. Does anyone know where I can find a value on minimum beam length due to fabrication limitations and what the specifics are concerning the equipment used to camber the beam?

 

[271828]

I've always heard that 25' was the hard minimum just because shorter beams won't fit into the machine. I know I've cambered more 28' and 29' beams than I'll ever remember, so I don't think 30' is a magic number.

 

[Lion06]

It is now in the DSC (which is "Detailing for Steel Construction"). The minimum length varies by beam depth. There are also minimum cambers based on beam depth. I don't remember if there are minimum cambers based on different lengths.

 

[slickdeals]

AISC had a steelwise article on this topic

http://www.modernsteel.com/Uploads/Issues/July_2006/30755_steelwise_camber.pdf