Originally Posted by Gaffney
demand/capacity ratios for WTC 1 core columns NIST NCSTAR 1-6 p 233 -- The average factor of safety is 2.1
demand/capacity ratio for a rep perimeter column -- mentioned in NIST NCSTAR 1-6 p 100. The factor of safety of this column was 5.7
I looked in NIST NCSTAR 1-6: http://wtc.nist.gov/NCSTAR1/PDF/NCSTAR%201-6.pdf
and couldn't find the information you are citing here on the pages you referenced. Do you have the correct page #s?