What is the size of the test specimen used in a Steiner test?

In a Steiner test, which is designed to evaluate the surface burning characteristics of materials, the test specimen is precisely 2 feet wide. This specific size is standardized to ensure consistent testing conditions, allowing for reliable comparisons between different materials. The width of 2 feet is critical as it aligns with the requirements set forth in fire safety standards, ensuring that the test accurately reflects how materials behave in real-world fire situations. Having a uniform size allows for standardized methodologies, which is essential for regulatory compliance and safety assessments in various environments. This standardization helps ensure that results are valid and can be replicated in testing scenarios.