Just wish those Yankee law makers would put illustrations in their documents.http://publicecodes.citation.com/icod/irc/2009/icod_irc_2009_4_sec004_par032.htm
I'd be guessing it's what we called 9" brick and piers until the '70's when we metricated.
ie 4-6 courses of 9" work then single skin with attached piers at 6' max spacing . .
@OP, a piccy plz