Did OSHA adopt the the ANSI approved IWCA I-14.1-2001 Window Cleaning Standard?

No. “The entire group of standards were not adopted, but in general, provisions made to Subpart D-Walking and Working Surfaces and Subpart I – Personal Protective Equipment (Fall Protection) mirror those contained in IWCA I-14.1- 2001, however, OSHA does not cite for violations of ANSI standards that have not been adopted as OSHA standards, but ANSI or other industry standards are sometimes referred to in citations and used as evidence of hazard recognition or feasible abatement means.”

Standard Interpretation