ASTM E119 and ANSI/UL 263 are test standards that focus on evaluating the fire resistance and fire ratings of various building assemblies, such as walls, floors, and roofs. These standards provide guidelines and procedures for determining the fire performance of construction materials and assemblies. Here's a brief explanation of each standard:
1. ASTM E119: ASTM E119 is a standard test method developed by ASTM International (formerly known as the American Society for Testing and Materials) titled "Standard Test Methods for Fire Tests of Building Construction and Materials." It is widely used to assess the fire resistance of various building elements, including walls, floors, beams, and columns. The purpose of ASTM E119 is to measure the time that a specimen can withstand exposure to fire and maintain its structural integrity, as well as limit the passage of heat and smoke during the test.
ASTM E119 involves subjecting the specimen to a standardized fire exposure curve, which simulates the time-temperature relationship of a typical building fire. The test measures parameters such as temperature rise, flame spread, structural stability, and the passage of heat and gases through the specimen. The test duration can vary depending on the required fire rating being evaluated.
1. ANSI/UL 263: ANSI/UL 263 (Underwriters Laboratories Standard 263), also known as the "Standard for Fire Tests of Building Construction and Materials," is a widely recognized test standard used to evaluate the fire resistance of various building assemblies. It is similar in purpose to ASTM E119 and provides criteria for determining the fire ratings of walls, floors, roofs, and other building components.
ANSI/UL 263 involves subjecting the test specimen to a fire exposure as per a specified time-temperature curve, which is similar to ASTM E119. The test evaluates factors such as structural integrity, passage of smoke and gases, and the ability to limit the spread of fire within the assembly. The fire resistance rating is determined based on the duration for which the assembly meets specific criteria during the test.
Both ASTM E119 and ANSI/UL 263 are widely adopted standards for evaluating the fire resistance of building assemblies. Compliance with these standards helps ensure that materials and structures used in construction meet the required fire safety standards and provide adequate protection in the event of a fire.