Can ties be cut and spliced

[N3M4N]

Hello,

I would like to know if it is acceptable for ties in shear wall to be cut and spliced as shown below?

 

[jayrod12]

No. You aren't going to get enough lap length likely. I'd be providing 135 degree bends around the corner bar on each piece.

 

[BAretired]

If the beam is deep enough to permit full strength lap length, it should be okay.

BA

 

[Rabbit12]

Agree with BA. If you can provide the required lap length should be fine. You could also use couplers. Not a hard no IMO but needs to be done properly.

 

[JAE]

Keep in mind this is a wall end - so the lap splice would include provision for "top bars" as more than 12" of concrete is placed below the bars.

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[JLNJ]

It look like a "can we just weld this" kind of question. Most rebar is not permitted to be welded.

 

[msquared48]

Grade 40 is field weldable.

I have a problem with the added bar configuration if is to be a tie in that all the vertical bars need to be enclosed by the ties. Hooks should be on both ends and extended to enclose the verticals as needed. One additional vertical bar needs to be added too.

Mike McCann, PE, SE (WA)

 

[Rabbit12]

JAE, the 12" you are referring to only applies to horizontal bars. The vertical splice in the tie wouldn't be subjected to that requirement.

 

[sandman21]

ASTM A706 is weldable. ASTM A615 GR. 40 and 60 are both weldable, however you will need to determine chemical composition to determine C.E. prior to welding to determine pre-heat requirements and setup the WPS for testing. The tie is horizontal you still could get air trapped around the bar requiring the 1.3 additional lap length.

 

[JAE]

Rabbit12 -
While this looks a lot like a beam with a slab on it, if you read the original post, this sketch is a plan view of a shear wall so the "ties" are horizontal where the OP wants to splice.



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[Rabbit12]

Ahh..I completely missed that. The sketch had me confused. Agree, you would need the 1.3 increase in this case.