GB4053.2-2009

Safety requirements for fixed steel ladders and platform - Part 2: Steel inclined ladders

固定式钢梯及平台安全要求第2部分：钢斜梯

GB 4053.2-2009 は現行の中国強制国家規格です：Safety requirements for fixed steel ladders and platform - Part 2: Steel inclined ladders。業界：食品。テーマ：製品安全。施行日：2009年12月1日。

適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。

コンプライアンス概要

この概要は現在英語のみで提供しています。

適用範囲

This standard specifies the basic safety requirements for the design, manufacture, and installation of fixed steel inclined ladders used in industrial enterprise workplaces. It applies to steel inclined ladders permanently installed on buildings or equipment with an inclination angle of 30° to 75° to the horizontal. It is a mandatory standard except for the terms and definitions chapter. It does not apply to ladders covered by other specific standards.

技術要求

The standard mandates the use of steel with mechanical properties not lower than Q235-B. The inclination angle of the steel inclined ladder must be within the range of 30° to 75°, with a preferred angle of 30° to 35°. The combination of rise and going must comply with a specific formula to ensure safe usage. Regarding design loads, fixed steel inclined ladders must withstand 5 times the intended live load, with a minimum concentrated load of 4.4 kN applied at any point. The minimum uniformly distributed live load on the horizontal projection is 3.5 kN/m². Handrails and intermediate railings must withstand specified concentrated loads, with strict limits on maximum deflection. For manufacturing and corrosion protection, welding connections must comply with *GB 50205*, and surfaces must be smooth without sharp edges or burrs. Appropriate anti-rust and anti-corrosion coating, including at least one primer and one finish coat, is mandatory. Outdoor installations require lightning protection grounding according to *GB 50057*. Structurally, the ladder height should generally not exceed 5m; otherwise, intermediate platforms are required. The inside clear width should be between 450mm and 1100mm. Treads must feature anti-slip properties, and the top tread surface should be flush with the platform. Handrail configurations depend on the ladder width, with closed-side handrail heights required to be between 860mm and 960mm.

試験方法

This standard primarily focuses on design verification and structural load assessment rather than specific laboratory testing procedures. Evaluations involve verifying the ladder's capacity to withstand minimum concentrated and uniformly distributed loads. Additionally, the structural integrity of handrails and intermediate railings is assessed under specified horizontal forces, ensuring maximum deflection does not exceed 1/250 of the span or 75mm.

よくある質問

What products are regulated under GB 4053.2-2009?

It covers fixed steel inclined ladders used in industrial workplaces, specifically those with an inclination angle between 30° and 75° to the horizontal.

Is GB 4053.2-2009 a mandatory standard?

Yes, all sections of this standard are mandatory for manufacturers in China, except for Chapter 3 which covers terms and definitions.

What are the key updates in GB 4053.2-2009 compared to the 1993 version?

The 2009 version introduces requirements for the inclination angle range, a formula for the combination of rise and going, load requirements for handrail posts and intermediate railings, and lightning protection grounding requirements.

The summary above provides a high-level overview of GB 4053.2-2009. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 4053.2-2009 today to access all detailed parameters, tables, and structural requirements.

適用のヒント

種別: 安全
CCS: C68
ICS: 13.100
所管部門: Ministry of Emergency Management
技術委員会: Ministry of Emergency Management