old metal floor deck tables

huangyhg

old metal floor deck tables
doing some structural review of an existing steel building with castellated steel beam and concrete on metal deck.
i found that the steel beams are adequate for the new loading condition, however i am unable to find any information on the metal deck and suspect that it will not work for the new loading.
the deck is designated as nkx 16-16 alternated with sec 21-16.  this is all the information i have.  building was designed in 1964
i did find some info on corrugated deck with a flat steel pan that went by the designation 20-20.  does anyone know which number goes with which part of the deck and what company may have used this designation.
thanks
find a job or post a job opening
nkx and sec 21 are robertson deck designations.  
thanks mrengineer!
robertson's website had old deck tables available.  the manf. tip was very useful.
thanks again.