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GB/T 24480-2026Lift landing doors fire resistance test - Methods for leakage rate, thermal insulation and radiation (English PDF)

电梯层门耐火试验　泄漏量、隔热、辐射测定法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 30, 2026

Implementation date

February 1, 2027

Scope

GB/T 24480-2026 is the English-translated version of 电梯层门耐火试验　泄漏量、隔热、辐射测定法.

GB/T 24480-2026 is the Chinese standard "Lift landing doors fire resistance test - Methods for leakage rate, thermal insulation and radiation".

Its scope clause reads: This document specifies the safety requirements and fire resistance classification for elevator landing doors, and describes their integrity, thermal insulation, and radiation resistance.

The determination method. This document applies to all types of elevator landing doors used to prevent the spread of flames from landing doors into the shaft. Its clauses include terms and definitions.

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Document preview — GB/T 24480-2026

National Standard of the People's Republic of China

ICS: 91.140.90
Classification: Q 78
Replacing: GB/T 24480-2009

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1.Scope
2 Normative References
3.Terms and Definitions
4.Safety Requirements
4.1 Performance Judgment Criteria
4.3 Thermal insulation
4.4 Radiation resistance
5.Fire resistance classification
5.1 Fire resistance rating
5.2 Classification Code
5.3 Combination of Judgment Criteria
5.4 Fire resistance rating
6.Testing and Evaluation
6.1 Experimental Principle
6.2 Test Equipment
6.3 Test Conditions
6.4 Test Sample
6.5 Supporting Structure
6.6 Sample Preparation
6.7 Pre-test checks
6.8 Experimental Instruments and Data Acquisition
6.9 Test Procedure
6.10 Test terminated
6.11 Fire resistance performance evaluation
6.13 Test Report
7.Identifier
Appendix A (Normative) Shields and Gas Leakage Measurement Systems
Appendix B (Normative) Standard Support Structure
Appendix C (Normative) Validation Method for Gas Leakage Measurement System
Appendix D (Normative) Calculation of Gas Leakage
Appendix E (Normative) Extrapolation Method for Higher Door Leakage Rates Rule
Appendix F (Informative) Product Fire Resistance Performance Evaluation Report

1 Scope

This document specifies the safety requirements and fire resistance classification for elevator landing doors, and describes their integrity, thermal insulation, and radiation resistance.

The determination method.

This document applies to all types of elevator landing doors used to prevent the spread of flames from landing doors into the shaft.

2 Normative references

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 2624.1-2006 Measurement of full-pipe flow rate using a differential pressure device installed in a circular cross-section pipe - Part 1.General

Principles and requirements

GB/T 7024-2025 Terminology for Elevators, Escalators and Moving Walks

GB/T 7588.1-2020 Safety Code for the Manufacture and Installation of Elevators - Part 1.Passenger Elevators and Freight Elevators

GB/T 7633-2008 Fire resistance test method for doors and roller shutters

GB/T 9978.1-2008 Fire Resistance Test Methods for Building Components - Part 1.General Requirements

GB/T 15706-2012 General Principles for Safety Design of Machinery. Risk Assessment and Risk Reduction

GB/T 26784 Fire resistance testing of building components. optional and additional test procedures.

ISO 834-1.2025 Fire resistance tests - Construction elements - Part 1.General requirements

Elements of building construction-Part 1.General requirements)

ISO 9705-1.2016 Fire reaction test - Corner flammability test of interior wall and ceiling finishing materials - Part 1.Small rooms

Structural testing methods (Reaction to fire tests - Room corner test for wall and ceiling lining products - Part 1.)

Test method for a small room configuration)

3 Terms and Definitions

The terms and definitions defined in GB/T 7024-2025, GB/T 9978.1-2008 and GB/T 15706-2012, as well as the following terms and definitions, apply.

In this document.

3.1 landing door;shaft door;hoistway door

Doors located at the entrances of each floor.

[Source. GB/T 7024-2025, 5.3.3]

3.2 thermally uninsulated landing door

Elevator landing doors that do not meet the selected insulation criteria.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 28 pages — is available in the English PDF.

Referenced standards

Cited by

Editions of GB/T 24480

Edition	Title	Revision	Status
GB/T 24480-2026	Lift landing doors fire resistance test - Methods for leakage rate, thermal insulation and radiation	current edition	Current
GB/T 24480-2009	Lift landing doors fire resistance test - Methods for leakage rate, thermal insulation and radiation	previous edition	In force until 1 February 2027

This page sells the current edition, GB/T 24480-2026. Earlier editions are listed for reference only.

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