LRFD C6.10.3.4-1
LRFD C6.10.3.4-1
(OP)
LRFD has an equation (C6.10.3.4-1) that says the width of the compression flange shall be greater than or equal to the girder shipping length divided by 85. It goes on to say that this equation is provided merely as a guideline and is not an absolute requirement. Since this isn't a requirement how far can you push the 85. Is L/90 a more reasonable number?





RE: LRFD C6.10.3.4-1
RE: LRFD C6.10.3.4-1
RE: LRFD C6.10.3.4-1
RE: LRFD C6.10.3.4-1
Be very careful with this criteria for I-girders though. Many DOT's require contractors to submit specialized erection plans ($$$) for sections exceeding the L/85 rule and this will add cost to the steel.
As a designer you may think you have optimized the plate sizes, but if this solution requires a specialized erection sequence then you have likley not optimized the cost.
RE: LRFD C6.10.3.4-1