I confess I don't know if it's written in some Code because I don't know the Codes verbatim, but any Equipment Erection Instruction Manual, that's normally issued by the equipment manufacturer (and I've got more than one in my personal library), or any Erection General Specification, that's normally issued by Project Engineering Companies (and I've got more than one in my personal library), say NO.
Giovanni S. Crisi
Sao Paulo - Brazil