Anchor bolt too long

• Jul 29, 2023

• #2

dik

Structural

Apr 13, 2001

25,642

Are you sure they are embedded the right amount? They are not galvanised, so they can be cut off and re-threaded easily... do that before you place the column. No harm done. I usually spec weldable anchor rods just in case they are mis-located.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

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• Jul 29, 2023

• Thread starter
• #3

Alloye

Structural

Jul 29, 2023

2

Thanks for the quick response. What is the best tool to cut new threads in these type of bolts?

 

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• Jul 29, 2023

• #4

271828

Structural

Mar 7, 2007

2,248

Along with what dik typed, I would need evidence to believe it's embedded the right distance.

 

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• Jul 29, 2023

• #5

Eng16080

Structural

Jun 16, 2020

729

Concrete Guy: "I set the anchor bolts 6 inches too high. What should we tell the engineer?"
GC: "Just say that they sent us 30 inch rods instead of 24 inch"

(Not that this could ever happen)

 

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• Jul 29, 2023

• #6

dik

Structural

Apr 13, 2001

25,642

Thread die for 5/8" dia with UNC threads... or something of that ilk... with an emphasis on checking the embedment.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

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• Jul 29, 2023

• #7

JStephen

Mechanical

Aug 25, 2004

8,604

Possibly cut some 6" sections of pipe to slip down over them, as opposed to a stack of washers.

 

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• Jul 29, 2023

• #8

bones206

Structural

Jun 22, 2007

1,947

Maybe use a double sill plate and plate washers. The plate washers are better for seismic performance anyways, so it's a bonus. In SDC D, I believe the plate washers are mandatory.

 

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• Jul 30, 2023

• #9

GeorgeTheCivilEngineer

Structural

Apr 25, 2017

281

If it's just one then I would expect they're telling a porky. Otherwise they've somehow received a 30" anchor in the box of 24" anchors.

Presumably these need full capacity? Contractor relationship depending I could be persuaded to recheck and examine exactly how much capacity is really needed...

 

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• Jul 30, 2023

• #10

dik

Structural

Apr 13, 2001

25,642

Other than it being spec'd, what embedment do you require for 5/8" bolt; what is the yield, or UTS of the bolt?

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

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• Jul 31, 2023

• #11

KootK

Structural

Oct 16, 2001

18,043

This is a localized, shear wall hold down situation, correct? If so, can the hold down be shifted up the boundary post to suit the anchor?

 

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• Jul 31, 2023

• #12

KootK

Structural

Oct 16, 2001

18,043

Are we talking about one of these things?

 

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