From: Roger Turk <73527.1356(--nospam--at)compuserve.com>
Date: Wed, 19 Jan 2000 20:35:33 -0500
Bill Sherman wrote:
>>Code formulas and coefficients should correspond to identifiable quantities.
This is one area that I think improvements have been made in the seismic
codes over the years, e.g. I couldn't relate to "K" in the formula ZIKSW,
but I can relate "R" to ductility in the formula ZICW/R; and I can relate to
Aa=0.40 better than "Zone 4". Also, commentaries and design examples help
greatly when trying to interpret the real purpose of code language.<<
R is simply 1/K! And was developed that way so that the results of the
formula wouldn't change.
"A rose is a rose ..."
A. Roger Turk, P.E.(Structural)