Lag Screw length

[JKW05]

Good morning. I posted this on the Materials Engineering forum and didn't get many bites. I'm hoping it's O.K. to try to direct traffic to it from here.

http://www.eng-tips.com/viewthread.cfm?qid=455116

JKW

 

[trustthemodel]

From what I recall those minimum penetration limitations are just minimums to ensure the applicability of the yield limit equations.

That said, I think you'll be surprised to see that assuming a smaller diameter lag screw for the same application may actually give you higher reference design values because of those limitations.