Bolt Shear Strength - Bearing, Tearout, and Shear Load Capacity Calculations
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- Опубліковано 13 лип 2024
- Learn how to calculate the shear strength of the bolts in a steel connection accounting for the bolt shear, bearing, and tear out limit states. Video discusses the stresses for each failure mode and the formulas required to determine the load carrying capacity. These calculations are required to design bolted steel connections in accordance with AISC 360 and the Steel Construction Manual.
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0:00 Intro
0:52 Bolt Shear
3:01 Bearing
4:16 Tearout
5:29 Combined Capacity
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This video and the information included are for informational purposes only. Structural Central makes no warranty and disclaims all responsibility and liability for the completeness, accuracy, and applicability of any of the contents of the video or any related comments. Any decisions or designs made using the information provided must meet all of the requirements of the building code and be done by a person that is qualified to do so as determined by the authority having jurisdiction. Reliance on any information provided within is solely at your own risk.
Thank you for the high-quality video! Theoretical videos with good graphics and clear explanations for Steel Design are lacking on youtube.
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!
Thanks for the nice explanation.
Thanks for the comment! I'm glad you found the video to be helpful.
Thank you very much for your this video. I would appreciate it if you could clarify the column cap plate connection design check.
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?
Thank you !
You're welcome :-)
Awesome videos thank you
Thanks for watching!
Can you share where you got the uneven load distribution equation for the bolts at 1:48min in the video??
Thanks!
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!
Please do an Video about Erection Sequence of Main Steel & Misc
Thanks, I always appreciate suggestions :-)
Hi,
Can you post a video on 2 side/3side displacement of a base plate with stiffner plate/bracket along with the tension/shear force and moment resolved tension force on bolts
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 :-)
Thank you for the video!
How to calculate the bearing stress if threads are not excluded as shown in the right joint when the video is at 2:12?
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.
you save me
Great! Always happy to help.