Metal Scaffolding
金屬棚架
Metal Scaffolding
We will explore the benefits of different scaffolding and why they are an excellent choice for any construction needs
金屬棚架
我們將探討不同金屬棚架的好處以及為什麼它們能夠滿足任何建築需求的絕佳選擇。
Metal scaffolding serves a variety of purposes in various construction projects. Throughout the world, including in Hong Kong, metal scaffolding is commonly used as temporary support structures. However, temporary scaffolding collapses occur frequently, often due to insufficient strength to support the applied loads or improper scaffolding design and construction. This module aims to provide a technical analysis of metal scaffolding classification, structural comparison, functionality, and safety for industry reference. This sharing, based on recognized engineering principles and national and international standards and regulations, demonstrates that the scaffolding's stability and strength meet equal or higher safety standards, providing guidance for the industry on good practices.
金屬棚架在不同的建築工程中有不同用途。在世界各地以至香港，金屬棚架通常用作臨時承托支架。不過，臨時支架倒塌事件時有發生，而肇事原因多由於支架的強度不足以承托所加之載重或支架設計及構造不當。本部落格，希望提供有關金屬棚架分類，結構比較，功能及安全的技術上作出分析，供業界參考。這分享是根據認可的工程原理及國家或國際的標準或規定去證明棚架的穩固性及強度足以達到相等或更高的安全標準闡明供業界有一良好作業選擇。
Provide workers and tools with a safe operating platform at height.
Support structure construction, maintenance, repair and decoration.
Exterior wall construction of high-rise buildings, bridges, and large facilities, art decoration, equipment installation, etc.
Standards
ASTM A500 Grade B Steel pipe: used for high-load-bearing scaffolding systems, such as large high-rise construction.
UK BS 1139 Steel pipe: widely used in standard scaffolding and accessories throughout the UK, such as London office building maintenance projects.
JapanHE G3444 STK400 Steel pipes: mostly used in large-scale new construction and maintenance projects in Japan.
EuropeEN 12811Specification: It is recommended to design the maximum vertical distance between each layer of the scaffolding2m, the minimum horizontal width0.6m。
GermanyDIN EN 12810 SUPER 65 Scaffolding example: Maximum per span3m, load capacity3kN/m²。
給工人及工具提供安全操作高處的平台
支撐結構建設、維護、修繕、裝修
高樓、橋樑、大型設施外牆施工，美術裝飾、設備安裝等
國際標準
美國ASTM A500 Grade B鋼管：用于承重高的棚架系統，如大型高樓施工。
英國BS 1139鋼管：廣泛應用於全英標準棚架與配件，如倫敦辦公樓維修工程。
日本JIS G3444 STK400鋼管：多用於日本大型新建和維修工程。
歐洲EN 12811規範：建議設計時棚架每層間最大垂直距離2m，橫向寬度最小0.6m。
德國DIN EN 12810 SUPER 65棚架例：每跨最大3m，載重達3kN/m²。
Main uses of metal scaffolding
金屬棚架主要用途
常見金屬棚架種類
• 管夾式棚架（Tube and Coupler Scaffolding） 傳統金屬棚架，由鋼管（通常直徑48.3mm）與扣件（couplers）組成，靈活度高，可用於結構複雜建築或不規則空間，如橋樑維修或老建築翻新。
• 系統式棚架（System Scaffolding） 預製模組化設計，常見有 Ringlock、Cuplock、Kwikstage 等品牌。組件標準化，安裝效率高，廣泛應用於大型建案、高樓建設。
• 門式棚架（Frame Scaffolding / Prefabricated Modular） 常在中小型工程、內部裝修使用，一般由兩側門式框架、橫桿、腳踏板組成，易於快速拆裝。
• 懸臂式棚架（Cantilever Scaffolding） 適用於地面有障礙物或不可設基座的位置，透過橫向鋼梁突出懸掛，常見於高樓外牆維修。
• 吊掛式棚架（Suspended Scaffolding） 棚台以鋼纜垂吊於高空，主要用於高樓外牆油漆、玻璃幕維護等。
Common types of metal scaffolding
Pipe clamp scaffolding (Tube and Coupler Scaffolding） Traditional metal scaffolding, made of steel pipes (usually diameter 48.3mm) and fasteners (couplers) composition, it is highly flexible and can be used in buildings with complex structures or irregular spaces, such as bridge maintenance or renovation of old buildings.
System scaffolding (System Scaffolding） Prefabricated modular design, common Ring lock、Cuplock、Kwikstage with standardized components and high installation efficiency, it is widely used in large-scale construction projects and high-rise buildings.
Door scaffolding (Frame Scaffolding / Prefabricated Modular） It is often used in small and medium-sized projects and interior decoration. It is generally composed of door frames on both sides, cross bars, and foot pedals, and is easy to disassemble and assemble quickly.
Cantilever scaffolding (Cantilever Scaffolding） It is suitable for locations with obstacles on the ground or where a base cannot be installed. It is suspended through horizontal steel beams and is commonly used in the maintenance of high-rise building exterior walls.
Hanging scaffolding (Suspended Scaffolding） The scaffolding is suspended in the air by steel cables and is mainly used for painting the exterior walls of high-rise buildings and maintaining glass curtain walls.
