For this certain case, I have just seen once when designer wanted to improve friction between base plate and concrete surface only. The post-tension load was 10% of the bolt strength.
I think this application is to some extent similar to the use of high strength bolts when we use them to resist...
I have nor used VB, but with Pascal and/or C, C++, there is a technique to generate somthing similar to dynamic memory or you can use linking list of pointer technique in C/C++ to generate new element in the matrix, this is just another way to manage element in order of the language.
I believe...
My field is steel truss. I would suggest due to progressive failure of member by member, peak displacement must be observed as design criterion. It is normal in my field, not sure that can be applied to moment frame.
