Trusses are built under which standard?

Trusses are built under which standard?

• A. E-119
• B. A-119
• C. ANSI 119
• D. NFPA 70

Answer: (A)

Fire-resistance ratings for building components, including structural members like trusses when evaluated for fire performance, come from a standardized fire exposure test that defines how assemblies are tested and how results are rated. The designation used is ASTM E119, commonly written as E119. It specifies the fire exposure method, test procedures, the time-temperature curve, and the pass/fail criteria used to assign a fire-resistance rating. The other options don’t provide the tested method for determining fire resistance: NFPA 70 is the electrical code, and ANSI/A-119 aren’t the standards used for fire-resistance testing of building assemblies. So, E-119 is the correct reference for how trusses are evaluated in terms of fire resistance.

Fire-resistance ratings for building components, including structural members like trusses when evaluated for fire performance, come from a standardized fire exposure test that defines how assemblies are tested and how results are rated. The designation used is ASTM E119, commonly written as E119. It specifies the fire exposure method, test procedures, the time-temperature curve, and the pass/fail criteria used to assign a fire-resistance rating. The other options don’t provide the tested method for determining fire resistance: NFPA 70 is the electrical code, and ANSI/A-119 aren’t the standards used for fire-resistance testing of building assemblies. So, E-119 is the correct reference for how trusses are evaluated in terms of fire resistance.