Difference between PCI and ACI318 APP-D in Concrete Inserts design 4

[TLycan]

Dear All,

Can anyone tell me when to design the concrete inserts with PCI or ACI318 appendix D?

Which of them is more common/credible in anchorage design.

me question rises from the fact I found a difference in calculation of shear capacity when shear is parallel to edge


Regards

 

[KootK]

I consider 318 to be more credible for general anchorage principles. However, if I'm designing an actual precast connection with a common precast connector, I'll use PCI's methods. They've done a lot of testing on the precast connectors and have a long history of successful connections in the field.

What are you connecting and what kind of connector are you thinking of using? Which method gives the higher capacity?

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough that I want to either change it or adopt it.

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

 

[JedClampett]

To somewhat echo KootK, PCI seems to have good common sense engineering practice, while ACI has more high powered research. PCI is much easier to calculate and apply. But where Appendix D is adopted, it is the law.

 

[haynewp]

I agree about having to use Appendix D where adopted. I also like using tables such as from PCI. The only way around App D I can think of is if the PCI testing that has been done would satisfy ACI App D testing requirements such as what is done for post installed anchors. But I don't know if that testing alternative to App D calculations is permitted for cast in anchors.

 

[BUGGAR]

I like to embed a cmu in my foundation around my anchor bolts so I can use the Masonry Code for my anchors and bypass App D.

 

[jayrod12]

Buggar,

Interesting idea, care to elaborate on the modifications to the design to accomodate that?

I see it working I'm just not totally sure what kind of things you would take into account.

Do you consider friction between the CMU and the remaining concrete?

 

[KootK]

I think that Buggar's comments may have just been a little APP D humour. If not, I can't wait to hear more...

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

 

[jayrod12]

That's why I asked

 

[BUGGAR]

It's App D cynicism.

It used to be punishment in an engineering office to have to review shop drawings. Now it's designing anchor bolts.

 

[BUGGAR]

My answer to App D

 

[jayrod12]

Consider that detail pilfered. Haha. and forwarded around the office.