A325X Bolt length calculation

[MadhuBR]

Is there any formula for A325X bolt length calculation or its same as usual bolt length calculation

 

[Lomarandil]

Bolt length -- as in which length bolt to order?

Same as any other structural bolt, with the added step of making sure the shank length is adequate to achieve an X condition (depending on number and thickness of plies, etc.).

----
just call me Lo.

 

[azcats]

And depending on your relative ply thicknesses, the bolt may only be 'X' if installed in one particular direction.

 

[RWW0002]

Look for "Specifying Bolt Length for High-Strength Bolts" by Charles Carter

https://www.aisc.org/Specifying-Bolt-Length-for-High-Strength-Bolts#.XZYydGZOmuA

This is a useful guide for bolt detailing in general and includes some charts that should help you out.

 

[JLNJ]

I avoid specifying X bolts (threads excluded from the shear plane) due to the real possibility of a bolt mix-up on site.