What is the meaning of UNO?
UNO is an acronym that stands for, “Unless Noted Otherwise”.
UNO is a blanket statement that covers all specified items related to the callout but leaves exceptions in specific situations. For instance, A325 bolts may be specified in the general notes, but a different fastener specification/grade may be specified in the construction plans.
Some construction plans may list the meaning as, “Unless Notes Otherwise”.
The acronym UON is also commonly used, standing for, “Unless Otherwise Noted”.
