How to handle uncomfortable technical disagreement/concern over design 3

[Lion06]

I have a situation in my office where I'm involved in a design and disagree with a principle that, in my mind, could have significant safety considerations. I've already aired my opinion, but others disagree, because it's just been done in other applications without problems. I just don't buy into that philosophy, especially when there is no technical literature on the subject.

I genuinely have concerns, but I don't know what else to do given that I've already put my concerns on the table and they've been dismissed.

 

[Tomfh]

Smooth bars develop at about half the rate of deformed bars. If it takes X to fully anchor a deform bar, a smooth bar will take about double that (that comes from my old 1920s concrete book). So surface bond is quite significant.

Also, mechanical interlock ramps up after surface bond slip occurs, so in reality many deformed bars are working via surface bond anyway...

That's not to say you should use use smooth bars!, but just to point out that bond isn't "zero" for smooth bars.


Back in the olden days all bars were smooth....

 

[hokie66]

Tomfh,
It is incorrect to say that all bars were smooth in the old days. What can be said is that there was a wide variety of types of reinforcement, including smooth bars, twisted bars, and a lot of different types of deformed bars. Not until about 1947 did the US standardise on the deformations, and that time period varied in other countries.

 

[Tomfh]

ok, point taken. change "all" to "a lot of"