1965 18j6 steel joist capacity

huangyhg

1965 18j6 steel joist capacity
i'm working on a building constructed in 1965 that has 18j6 steel joists spanning 27 feet.  does anyone have a table from that time-frame that indicates what the capacity of the joist is?
"75 year manual, 1928 - 2003", available from the steel joist institute at this link
thanks slideruleera.  i actually have already ordered it but it hasn't arrived yet and i was hoping to keep moving forward if someone will help me out.
the steel joist institute will research it for you - for free!  just fill out the information at:  
from asd 7th:
total allowable uniform=268 lb/ft and fy=22 ksi