Concrete Spring Constant Calculation

[canstruct12]

Hi All, I all trying to find a reference to the information posted in the link below to understand the calculation of a concrete spring constant, as indicated in the link below.

[URL unfurl="true"]https://www.eng-tips.com/viewthread.cfm?qid=369976[/url]

Unfortunately, the reference in the Eng-tips link is no longer active.

Linkhttps://www.aisc.org/UploadedContent/2008NASCCSessions/E1/default.htm

If anyone can shed light on the calculation of the concrete spring constant, k = f'c/0.003, I would be greatly in you debt.

Much Thanks, Canstruct

 

[Agbsh]

I think this is coming from the concrete crushing strain taken to be 0.003 by ACI. See the original presentation here (about 10 minutes from beginning, he didn’t go in detail though)

https://youtube.com/watch?v=x_P1EezPXGI&feature=youtu.be

It’s a good presentation.