Home / Standards / GB/T 31593.6-2026 GB/T 31593.6-2026 Upcoming Fire safety engineering—Part 6:Requirements governing algebraic equations for smoke layers 消防安全工程 第6部分:烟气层的计算要求 Standard Type GBT ICS 13.220.01 CCS C 80 Status 即将实施 Issue Date 2026-03-31 Implementation 2026-10-01 Responsible Dept 国家消防救援局 Drafting Unit N/A