Translate a spec callout for 'ANSI Z97.1 Class A' or 'CPSC Category II' safety glazing into the equivalent modern terminology and confirm which one is legally mandatory versus voluntary.

Steps

1. Pull the current 16 CFR Part 1201 text from ecfr.gov (Safety Standard for Architectural Glazing Materials) — this is the federal, legally mandatory standard administered by CPSC
2. Note that CPSC's Category I (150 ft-lb impact) and Category II (400 ft-lb impact) tests were explicitly aligned in 2016 with ANSI Z97.1's Class B and Class A respectively — Category I = Class B, Category II = Class A
3. Confirm ANSI Z97.1-2015 is referenced within 16 CFR 1201 as the adopted test methodology, but ANSI Z97.1 itself remains a voluntary industry specification with no independent legal force — building codes (IBC/IRC) determine WHERE safety glazing is required, while 1201/Z97.1 determine performance/test criteria for the glazing itself
4. When a spec or shop drawing uses old 'Category'/'Class' language inconsistently, cross-reference both terms against the same tested impact energy (150 vs 400 ft-lb) rather than assuming they are unrelated systems
5. Verify current ANSI Z97.1 edition year cited (e.g., -2015 vs a later revision) against what the project spec section actually calls out, since edition mismatches can affect testing labs' acceptance