Standards Webstore Catalogs
Selected Standards Journals
Selected Journal Collections
National - U.S.A.
Codes are jurisdictional in nature, i.e. they only apply within the boundaries of the geopolitical boundaries governed by the government agency that adopted them. Note that jurisdictions can overlap and multiple codes can be in effect and exert significant influence over the project or product design.
Unlike standards, codes typically are not organized in databases or catalogs that are readily and easily searchable. Since the applicability of codes depends on the jurisdiction, most codes are found in the authorizing government agency's website. Since the ease-of-use for those websites varies significantly, finding the code requires some sleuthing. Look for menu options that refer to codes or rules and regulations since those are generally where these documents are stored.
Surprisingly, a search using a commercial search interface like Google or Bing provides useful results in some cases. At the very least, the results may point toward the relevant section of the agency website that may not be readily identifiable on the main page.
National - U.S.
State - Texas
Local - Waco Metroplex and select CENTEX