GB/T 27905.2-2011

Fire investigators use this standard to examine traces on ordinary sheet glass at fire scenes, helping to determine the cause and spread of a fire. By analyzing thermal deformation, cracking, or mechanical breakage patterns, they can distinguish accidental fires from intentional arson. This standard provides a unified technical approach for fire evidence analysis, ensuring scientific and reliable investigation outcomes.

火灾调查人员使用该标准来检查火灾现场中普通平板玻璃的痕迹，以判断火灾发生的原因和蔓延路径。通过分析玻璃的受热变形、炸裂或外力破坏痕迹，可以区分火灾是意外还是人为纵火。该标准为火灾物证鉴定提供了统一的技术方法，确保调查结果的科学性和可靠性。

GB/T 27905.2-2011 specifies inspection methods for fire scene traces on ordinary sheet glass, including terminology, apparatus, sample extraction, observation, and trace characteristics. It classifies glass damage into thermal deformation, thermal cracking, and mechanical breaking traces, and is applicable to laboratory examination. This standard provides a unified technical basis for fire investigators to determine fire cause and spread through glass evidence, enhancing the scientific accuracy of forensic analysis.

GB/T 27905.2-2011 规定了普通平板玻璃火灾物证痕迹检查的方法，包括术语定义、器材、样品提取、观察和痕迹特征分析。标准将玻璃破坏痕迹分为受热变形、受热炸裂和外力破坏三类，适用于实验室检查。该标准为火灾调查人员提供了统一的技术依据，有助于通过玻璃痕迹判断火灾原因和蔓延路径，提升物证鉴定的科学性和准确性。