UL 2079-2004 建筑物连接系统的耐火性试验

标准号：UL 2079-2004
中文标准名称：建筑物连接系统的耐火性试验
英文标准名称：UL Standard for Safety for Tests for Fire Resistance of Building Joint Systems
标准类型：P16
发布日期：2004/10/21 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：P16
国际标准分类号：13.220.50
适用范围：1.1 These tests are applicable to joint systems of various materials and construction that are intended for use in linear openings between adjacent fire resistive structures.1.2 The fire endurance ratings for joint systems are intended to register performance during the period of fire exposure and are not intended to be interpreted as having determined the acceptability of the joint systems for use before or after fire exposure. The intent of these methods is to develop data to assist others in determining the suitability of the joint systems where fire resistance is required.1.3 These requirements are intended to evaluate the length of time that the types of joint systemsspecified in 1.1 will contain a fire during a predetermined test exposure. The test evaluates the joint system’s resistance to heat and, in some instances, to a hose stream, while carrying an applied load if the assembly is load bearing. The method of testing also includes optional air leakage tests to determine the rate of air leakage through joint systems resulting from a specified air pressure difference applied across the surface of the joint systems.1.4 Under these requirements a joint system is subjected to a standard fire exposure controlled toachieve specified temperatures throughout a specified time period. This exposure by itself is not intended to be representative of all fire conditions; conditions vary with changes in the amount, nature and distribution of fire loading, ventilation, compartment size and configuration, and heat sink characteristics of the compartment.1.5 All joint systems are cycled through their intended range of movement prior to fire exposure todemonstrate the joint system’s range of movement and the impact of the joint system during movementon the adjacent fire resistive structures. Joint systems are required to be loaded to their designed live load capacity during the fire test. For tests of wall-to-wall and head-of-wall joint systems, the fire test is followed by the application of a specified standard hose stream.1.6 These requirements cover the measurement of the transmission through the joint system of heat andgases sufficiently hot to ignite cotton waste.1.7 Revised and relocated as 1.14 March 10, 20061.8 These requirements provide a relative measure of fire performance of comparable assemblies underthese specified fire exposure conditions. Any variation from the construction or conditions that are tested, such as method of assembly and materials, is not within the scope of this test method.1.9 Tests for evaluating the suitability of poured or formed-in-place materials for use in joint systems under non-fire conditions are found in the Standard Test Method for Adhesion and Cohesion ofElastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle), ASTM C 719-93.1.10 Tests for evaluating the suitability of joint systems other than those with poured or formed-in-place materials under non-fire conditions are found in the Standard Test Method for Cyclic Movement andMeasuring the Minimum and Maximum Joint Widths of Architectural Joint Systems, ASTM E 1399-91.