1 Scope

1.1 This Standard describes a full-scale test method for measuring the thermal resistance of protective materials, systems, or constructions to rapid-temperature-rise fires.

1.2 Part 1 of this Standard describes the furnace calibration and furnace control requirements.

Summary of Topics

This revision of ANSI/UL 1709 dated July 8, 2024 includes the following changes in requirements:

– Fire Test Procedures for Passive Fire Protection Systems for Critical Process Control Equipment (CPCE); Part 3, Section 18 – 24, and Annex C – Annex E

– Fire Resistance Rating Procedures for Hollow Section Column Tests with Reactive Materials; 8.5 – 8.7, 16.5A, Section A5