Standard No.:	GB 4053.1-2025
English Name:	Safety requirements for fixed metal ladders and platform—Part 1: Vertical ladders
Chinese Name:	固定式金属梯及平台安全要求 第1部分：直梯
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR, SAC
Issued on:	2025-12-31
Implemented on:	2027-1-1
Status:	to be valid
Superseding:	GB 4053.1-2009 Safety Requirements for Fixed Steel Ladders and Platform - Part 1: Steel Vertical Ladders GB 4053.1-2009E
Target Language:	English
File Format:	PDF
Word Count:	13000 words
Translation Price(USD):	390.0
Delivery:	via email in 1~5 business day

GB 4053.1-2025 Safety requirements for fixed metal ladders and platform—Part 1: Vertical ladders English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS CCS H National Standard of the People's Republic of China ‌GB 4053.1-2025 Replaces GB 4053.1-2009 Safety requirements for fixed metal ladders and platform—Part 1: Vertical ladders 固定式金属梯及平台安全要求 第1部分：直梯 Issue date: 2025-12-02 Implementation date: 2027-01-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword Introduction 1 Scope 2 Normative References 3 Terms and Definitions 4 General Requirements 4.1 Single/Double Stile Selection 4.2 Ladder Flight Height Setting 4.3 Fall Protection Device Setting 4.4 Materials 4.5 Loads 4.6 Manufacturing and Installation 4.7 Corrosion Protection 4.8 Lightning Protection and Grounding 5 Structural Requirements for Vertical Ladders 5.1 Ladder Flight and Platform Setting 5.2 Supports 5.3 Surrounding Space 5.4 Inside Clear Width 5.5 Rungs 5.6 Stiles 6 Fall Protection Devices 6.1 Safety Cages 6.2 Fall Arresters 6.3 Additional Fall Protection Measures 7 Intermediate Platforms, Ladder Access Doors, and Self-Closing Doors 7.1 Intermediate Platforms 7.2 Ladder Access Doors 7.3 Self-Closing Doors 8 Instructions for Use and Warning Information Appendix A (Informative) Common Additional Fall Protection Measures Bibliography Fixed Metal Ladders and Platforms Safety Requirements Part 1: Vertical Ladders 1 Scope This document specifies the basic safety requirements for the design, manufacture, and installation of fixed metal vertical ladders (hereinafter referred to as "vertical ladders"), including general requirements for vertical ladders and their accessory components, structural requirements for vertical ladders, fall protection devices, intermediate landing platforms, ladder access doors and self-closing doors, instructions for use, and warning information. This document applies to fixed metal vertical ladders used in workplaces within industrial enterprises. This document does not apply to fixed metal vertical ladders installed on nuclear facilities, ships, lifting machinery, power transmission towers, mast-type towers, communication towers, or meteorological towers. 2 Normative References The contents of the following documents become essential provisions of this document through normative reference herein. For dated references, only the edition corresponding to that date applies. For undated references, the latest edition (including all amendments) applies. GB 2894 Safety Colours and Safety Signs GB 4053.3—2025 Safety Requirements for Fixed Metal Ladders and Platforms - Part 3: Industrial Guardrails and Platforms GB 24537 Fall Protection - Rope Grabs with Flexible Guide Rails GB 24542 Fall Protection - Rope Grabs with Rigid Guide Rails GB 24544 Fall Protection - Retractable Type Fall Arresters GB/T 50046 Standard for Anticorrosion Design of Industrial Buildings GB 50057 Code for Design of Lightning Protection of Buildings GB 50205 Standard for Acceptance of Construction Quality of Steel Structures GB 50576 Code for Acceptance of Construction Quality of Aluminum Alloy Structures GB/T 51082 Standard for Coating Design of Industrial Buildings GB 55006 General Code for Steel Structures 3 Terms and Definitions The terms and definitions defined in GB 4053.3 and the following apply to this document. 3.1 Vertical Ladder A metal rung ladder permanently installed on a building structure or equipment, with an inclination angle to the horizontal plane between 75° and 90° (see Figure 1). 3.2 Ladder with Two Stiles A vertical ladder (3.1) consisting of rungs (3.5) and two side stiles (3.4) [see Figure 2 a)]. 3.3 Ladder with One Stile A vertical ladder (3.1) consisting of rungs (3.5) and a single stile (3.4) [see Figure 2 b)]. 3.4 Stile The load-bearing member supporting the rungs (3.5) or other accessory components (see item 8 in Figure 1). 3.5 Rung The horizontal component stepped on by personnel when ascending or descending a vertical ladder (3.1) (see item 7 in Figure 1). 3.6 Support A component used to fix the vertical ladder (3.1) to the building structure or equipment (see item 6 in Figure 1). 3.7 Inside Clear Width The horizontal clear width between the inner sides of the stiles (3.4) for a ladder with two stiles (3.2) [w in Figure 2 a)], or the horizontal clear width between the inner sides of the anti-slip protection devices on both sides of the rungs (3.5) for a ladder with one stile (3.3) [w in Figure 2 b)]. 3.8 Ladder Flight A continuous section of a vertical ladder (3.1) (see item 9 in Figure 1 and item 3 in Figure 3). Note: For a vertical ladder (3.1) without platforms, the ladder flight is located between the departure area (3.15) and the arriving area (3.16) [item 3 in Figure 3 a)]; for a vertical ladder with platforms, the ladder flight is located between the departure area (3.15) or the arriving area (3.16) and the adjacent platform, or between two adjacent platforms [item 3 in Figure 3 b)]. 3.9 Height of Ladder Flight For a single ladder flight, it is the vertical distance between the departure area (3.15) and the arriving area (3.16); for multiple ladder flights, it is the vertical distance between the departure area (3.15) or the arriving area (3.16) and an intermediate platform (3.17), or the vertical distance between adjacent platforms. Note: The heights of multiple ladder flights are shown as h1, h2, h3 in Figure 3 b). 3.10 Extension of Ladder Flight When the top of a ladder flight (3.8) is extended, the part of the ladder flight that is higher than the intermediate platform (3.17) or the arriving area (3.16) (see item 10 in Figure 1 and item 1 in Figure 3). 3.11 Fall Protection Technical measures taken to prevent personnel from falling or to reduce the risk of falling. 3.12 Safety Cage A cage-type fall protection device installed on the stile (3.4) or building structure (equipment), enclosing the climbing space around the vertical ladder (3.1) (see item 3 in Figure 1). 3.13 Fall Arrester A mechanical fall protection device installed on a vertical ladder (3.1) or building structure (equipment), used in conjunction with personal protective equipment. Note: Fall arresters include rope grabs with rigid guide rails, rope grabs with flexible guide rails, and retractable type fall arresters. 3.14 Climbing Height The vertical distance between the departure area (3.15) and the arriving area (3.16) (see H in Figure 3). 3.15 Departure Area The starting plane where personnel begin climbing up the vertical ladder (3.1) (see item 5 in Figure 1 and item 4 in Figure 3). 3.16 Arriving Area The plane reached by personnel after climbing up the vertical ladder (3.1) (see item 11 in Figure 1 and item 2 in Figure 3). 3.17 Intermediate Platform A platform located between upper and adjacent lower ladder flights (3.8), providing a place for personnel to switch ladder flights or rest. [Source: GB 4053.3—2025, 3.11, modified] 3.18 Trapdoor A door installed at an opening in an upper platform or other horizontal structure for accessing the vertical ladder (3.1) (see Figure 13). 4 General Requirements 4.1 Single/Double Stile Selection