Concrete Construction Joint - Future Addition 1

[JoelTXCive]

What does everyone think about this construction joint for future additions?

This would be for a Wastewater Treatment Plant built in phases. Sometimes, it can be years in-between the phases, so the joint will sit for quite some time before being used.

Thank you in advance for the critique!

 

[JedClampett]

We have the identical detail (you must work for a competitor), except for the key.
[ul]
[li]Key is worthless and possibly harmful.[/li]
[li]Ditto for the bond breaker, except it probably does no harm.[/li]
[li]I'd ask for the 1500 psi concrete, but the contractor might "forget" and put in 4000 psi (or whatever). So expect Jack to be doing some "hammerin".[/li]
[li]It's very hard to make a contractor see any benefit to help out the next guy, so this detail is normally built like the dog's dinner.[/li]
[/ul]

 

[JoelTXCive]

Jed-

I might work for a competitor. I work for a large regional, but small national firm in the Texas market.

I generated the above detail from 3 details I found on old plans.

I've done a bunch of reading on shear friction and am with you on the key being useless.....BUT every time I issue plans without it; I get an RFI.

 

[dik]

I usually use a detail similar to attached, and you can use a waterstop in lieu of the rebar; I've done it often. I often use bentonite rod in lieu of PVC waterstops... my preferred way to do it

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

-Dik