GB/T 31540.5-2019Fire safety engineering guide—Part 5: Movement of fire effluents (English PDF)

Foreword

GB/T 31540 "Fire Safety Engineering Guide" is divided into the following sections.

--- Part 1. Application of performance in design;

--- Part 2. Fire occurrence, development and generation of smoke;

--- Part 3. Structural response and the external spread of indoor fires;

--- Part 4. Detection, start-up and fire suppression;

--- Part 5. Fire smoke movement;

This part is the fifth part of GB/T 31540.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

Introduction

In the event of a fire in a building, a large amount of smoke is inevitable, and the smoke generated by the fire can cause serious damage to people inside the building. therefore, Effective control of flue gas is one of the important goals of building fire protection design. At present, building fire smoke control mainly adopts two methods, one is According to the relevant method, the technical indicators and requirements for smoke and smoke prevention are given by the relevant technical specifications; the other is the fire safety engineering method, which is mainly adopted.

Fire model and related calculation formulas or calculation software to predict the occurrence and development of fire smoke by setting fire scenes and fire scale And on this basis, put forward control measures to slow down the deterioration of the environment at the scene of the fire, increase the chances of people being rescued, and thus reduce the fire smoke.

The hazards that gas movement can bring. This part of GB/T 31540 can use fire safety engineering methods to predict fire smoke for engineers and technicians. Guide to gas movement.

1 Scope

This part of GB/T 31540 specifies the evaluation methods, input and output parameters and engineering methods of fire smoke movement.

This section applies to the basic guidelines for building fire safety engineering and fire risk assessment and related engineering applications.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 5907.1-2014 Fire vocabulary Part 1: General terms

GB/T 31540.1-2015 Fire safety engineering guide Part 1: Application of performance in design

GB/T 31540.2-2015 Fire Safety Engineering Guide Part 2: Fire occurrence, development and smoke generation

GB/T 31540.4-2015 Fire Safety Engineering Guide Part 4: Detection, Startup and Extinguishing

GA/T 999-2012 smoke control system field performance test method hot smoke test method

3 Terms and definitions

The following terms and definitions as defined in GB/T 5907.1-2014 apply to this document.

4 Symbol

The following symbols apply to this document. p pressure in Pascal (Pa) delta p differential pressure in Pascals (Pa)

00 ambient air density in kilograms per cubic meter (kg/m3)