Bolt Shear Strength - Bearing, Tearout, and Shear Load Capacity Calculations 

No problem! I'm happy to be able to fill that niche.

@@StructuralCentral I’ll be the first one on the Patreon! Anything to provide future engineering candidates with better study resources. May I suggest collaborating with The Efficient Engineer? They seem to be the only other similar creator. There’s definitely a demand. I hope the channel takes off!

You're welcome! There's multiple possible configurations for connections with cap plates so I can't really make a general comment about their design. Is there something that you were specifically wondering about?

Thanks for the comment! I'm glad you found the video to be helpful.

That's a great suggestion! It's already on a list of potential future videos along with a video about prying action force on bolts.

The strength of each individual bolt is the minimum of its bearing, tearout, and shear strengths (including safety factors), so you must make sure that this exceeds the applied shear force. An example connection with 3 bolts is discussed in the video at 6:12. The applied load cannot exceed 62 kips. (This is just considering the bolts, so the actual connection strength may be lower when you consider the other limit states.)

@@StructuralCentral do you have a structural private courses?

Sorry, but I don't offer anything like that. University programs are where you can get a broad understanding of the structural engineering field. Here's also a great list of books and resources for each of the common structure types. www.eng-tips.com/faqs.cfm?fid=2189

@@StructuralCentral Thank you , i appreciate it

You're welcome. You can also subscribe too if you'd like to see more videos in the future :-)

Thanks for watching!

You're welcome :-)

Thanks for the suggestion! I always appreciate hearing what people would like to see next. I am planning on making a video about the design of baseplates. Subscribe so you don't miss it :-)

Thanks, I always appreciate suggestions :-)

Check out the commentary for Section J3.6 of AISC 360-16. The paragraph right after they show Equation C-J3-4 discusses everything that is shown in the video about determining Fnv. I hope that helps!

The threads do not affect the bearing strength of the bolted connection (ΦRn = Φ C d t Fu). You get to use the same value for the bolt diameter, d, regardless of where the threads end up in the joint. AISC 360-16, Commentary Section J3.10 states: "...the same bearing value applies to all joints assembled by bolts, regardless of fastener shear strength or the presence or absence of threads in the bearing area." The thread location only affects the bolt shear strength (ΦRn = Φ Fnv Ab). When the threads are located at the shear plane, the value for Fnv that you get from Table J3.2 of AISC 360 has a 0.8 factor built into it to account for the reduced cross section. (Fnv for Group A, A325 bolts is 68 ksi when threads are excluded from shear planes instead of 54 ksi when threads are NOT excluded from shear planes.)

@@StructuralCentral Thank you very much for your detailed explanation.

Great! Always happy to help.