CAN ULC-S146-2019 PDF Download

The CAN ULC-S146-2019 standard is a method of test for evaluating encapsulation materials and assemblies of materials used to protect structural timber elements. The standard focuses on evaluating the temperature transmission performance of these materials when subjected to a standard fire exposure condition.

The test follows a standard time-temperature curve, as described in Section 6 (Test Conditions), to simulate a fire exposure situation. The purpose of the test is to determine the encapsulation period during which the structural timber element, when encapsulated with the tested materials, does not reach temperatures that can cause charring or combustion. This ensures that the encapsulation materials effectively protect the timber element and do not contribute to fire severity.

It is important to note that the encapsulation period established by this test method does not determine the fire endurance period of the encapsulation materials or the structural timber element itself. It only indicates the period of standard fire exposure during which the materials can effectively prevent charring or combustion.

Furthermore, the test method does not assess the suitability of the encapsulation materials for use after fire exposure. Its focus is solely on evaluating their performance during the fire exposure period.