Some links to what I found today on codes that are available for viewing online
. Not every state is here, but enough are to give anyone an overview of the IRC codes. As always, check what your local jurisdiction uses. The Virginia codes are quite representative as far as the IRC in general. Local governments in many cases and states can change what sections they use. Note again that these are viewable and not printable or able to be saved to disk; Read Only in other words.
IRC in general, non state specifichttp://publicecodes.citation.com/icod/
Firefox with the DownThemAll addon can download and save many of these. As well some of the sites permit copying of paragraphs while others do not. EDIT: I was reminded about one of the available IRC versions that can be readily downloaded. It's from my FTP link above in reply#7.
Specifically the Minnesota 2006 version.... Click the link above or go to this page
and scroll down to mn_residential.pdf Download and save it. It is a large file, 47MB, but the nice thing is that it is complete, cover to back and when opened in Adobe Reader it is easy to move from page to page. There is a page counter at the top of the Adobe window where the page number of the document may be found. That makes it easier to reference than referring to a section number of the IRC. The various stste codes may have differences and using one, typical, code could make discussions easier and less time consuming. There are many state versions there. In the end, use the code that is applicable to the area being built in. Then if there are any specific questions about a section it is more readily located.