Non-Contact Splices Placed Vertically

[Quade999]

Hi Everyone,

Design Codes allow a non-contact lap splice of up to 6". Would there be any issue by having a non-contact splice take place vertically instead of transversely like shown below? Provided that the section capacity is calculated assuming the steel is of the lower depth/

 

[canwesteng]

No, but I'm curious why you would want to. It would be easier to build the cage if they were tied together.

 

[KootK]

I also vote no, at least for the middle bars (kinda depends on stirrup spacing). My reasoning is shown below. I believe that the non-contact splicing is meant for horizontal offsets in members like slabs and walls where you've got gobs of adjacent stuff around to resist any resulting bursting tendency. If this is new construction, you could certainly arrange your stirrups to make this possible.

 

[Quade999]

No as in it is an issue, or no as in it isn't an issue?

Basically it is repair work where some geometry is changing and existing bars are in bad locations.

Seems like it wouldn't be that different to the scenario below where you have two layers with splices occurring at the same point.

 

[KootK]

For me it's a no, I wouldn't do this without a gaggle of stirrups near by to restrain those struts that I showed from bursting out of the concrete.