Anchor Bolt : What , Why and How

#AnchorBolt

Learn what is Anchor Bolt, why Anchor Bolt is used and how anchor bolt carry load.
You must have seen that in many steel structure Anchor Bolt are used.
But do you know-
What is Anchor Bolt ?
Where Anchor Bolt is needed?
How Anchor Bolt carry load?
Well, This video will explain you every thing.

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[rimmaaleksandrovsky]

such great tutorial, helped me with my assignment. Very clear and straight forward explanation.

[rakeshkansara]

Explained very well. Thanks for video.

[pankajkumar-gvpn]

Thank you so much for providing good information. Please make a video on topic how steel base plate transfer load on concrete pedestal. Most of the book cover directly base plate to concrete pedestal uniform load type. But in practical most of time I see steel base plate is elevated over pedestal through bolt even no any grouting has provided. Will it transfer load as point load through bolt on pedestal.

[ForensicCats]

11:50 it is tension in the bolt but it is because of "compression" that the crack developed...
The bolt "head" is similar to a compressive load, this developed the "cone failure"...
This anchor failure is because of concrete compression failure from the point loading of the bolt head (using tension as the loading force)...
Hope that makes sense...
A deeper embedded head would resist more and a larger head /"plate" would distribute the load also.
Overlapping cones of course are always an issue and wind loads create a shock force greater than non-shock loads.
Deeper concrete footers and embedding of bars are superior to the smaller surface bolts.
Your fracture implied surface tension was not shared in the concrete resistance... Loading was from bolt head and this cone failure is typical (38-45 degrees )... Typical of the fractures from the edge of the bolt head "edges" and of course this would be circular from top view / visual.
The question is, how much force to create this fracture in this concrete and embedment?
Again, this is an an internal compression load from the bolt head and I can get results from drilling a hole in a core and loading head of bolt to duplicate this failure (of course I would drill a hole to point load the embedded head, this will allow for the surrounding concrete to preticapate to some degree.
My theory is of "stirrups" and this allows for "trapping" exploding concrete, this is not a deflection failure but an "bursting failure" and strapping does a great job on trapping that buckling failure.
Confine the cone, do not allow it to "displace"...
I hope I did not confuse you and I hope you do take offense.

[bheemappakshatrer]

Very nice explanation, sir could you explain us why we use lesser strength material for anchor bolts when compared to main structure bolts

[arunsingh]

Please provide how to calculate reinforement to avoid crack due to shear force & tension....

[sasikumartherayil]

Sir

Theory very clear now. Can you add a problem on anchor bolt

[sulemanmansoori]

Hello sir, I have a question if the base is pinned connected and the upper frame is moment connected how does the flange carry loads from column to the base plate and to the foundation …. Your explanation on this would be very helpful

[tris]

how about value of torque anchorbolt. how to calculate?

[ssaranya]

Thanks for the video. When modelling anchor bolts in ABAQUS, is it necessary to include bolt pretension?

[jn]

Plz tell about double connection in column in next video bro

[ashwaniverma]

Why is sometimes Base plate kept on nuts and later grouting is done below base plate . Why base is not kept directly over Concrete surface.?

[brucetrappleton]

The bolt will never be stronger than the concrete. Before the concrete cracks, the bolt will crack first