I have searched all the major distributors of Codes and Specifications and can not find anyone that has AISC N690-94, the latest year that I can find is 06. Our customer requires the year to be 94. Any help would be greatly appreciated.
Many times project specs. reference outdated specs., which might be the situation here. You might just send an RFI requesting approval to use the one you have, if it's at least a later edition than the '94 requirement.
The link below will take you to the AISC website so that you can download the current N690 spec that includes Supplement No. 1......