What Size are Cuplock Scaffolds?
Cuplock scaffolding is one of the most widely used modular scaffolding systems in the construction industry, known for its quick assembly, versatility, and strength. Whether you’re working on residential buildings, industrial structures, or commercial projects, understanding cuplock scaffold sizes is critical for planning, safety, and compliance. This article breaks down the standard sizes and components of cuplock scaffolds, helping you choose the right configuration for your project.
What is Cuplock Scaffolding?
Cuplock scaffolding is a system scaffold made up of prefabricated components that lock together using a unique node-point locking mechanism (the “cup”). It’s often used in large-scale construction, shipbuilding, and infrastructure projects.
The main components of the Cuplock system are:
- Standards (Verticals)
- Ledgers (Horizontals)
- Transoms and Diagonal Braces
- Accessories (Base jacks, spigots, staircases, etc.)

Standard Cuplock Scaffold Sizes
Cuplock scaffolding comes in modular sizes for both vertical and horizontal components. These sizes are standardized to ensure ease of use and interchangeability on-site.
1. Standards
Vertical standards are the main load-bearing components. They have cup joints spaced every 500 mm (or 0.5 meters) to accommodate horizontal members.
Common Sizes:
Length (mm) | Length (ft) |
---|---|
1000 mm | 3.3 ft |
1500 mm | 5 ft |
2000 mm | 6.6 ft |
2500 mm | 8.2 ft |
3000 mm | 9.8 ft |
Tube Diameter: Typically 48.3 mm
Wall Thickness: 3.2 mm (can vary with standards and loading requirements)
2. Ledgers
Ledgers form the horizontal supports and are clamped between the top and bottom cups of the standards.
Common Sizes:
Length (mm) | Length (ft) |
---|---|
600 mm | 2 ft |
900 mm | 3 ft |
1200 mm | 4 ft |
1500 mm | 5 ft |
1800 mm | 6 ft |
2400 mm | 8ft |
Ledgers are also made from 48.3 mm OD tubes and feature forged ledger blades at each end to lock into the cuplock system.
Other Cuplock Components and Sizes
In addition to verticals and ledgers, the system includes:
- Transoms: Provide intermediate support, available in 600 mm to 1200 mm.
- Diagonal Braces: Usually sized for matching the bay spacing.
- Toe Boards: 1000 mm to 3000 mm, based on platform width.
- Base Jacks: Height-adjustable up to 600 mm for leveling.

Choosing the Right Size: Key Considerations
- Load Requirements: Heavier loads need tighter bay spacing and thicker tubes.
- Working Height: Taller scaffolding requires additional vertical standards and bracing.
- Platform Width: Wider platforms (e.g., twin ledgers or double bay) may be needed for certain trades like masonry.
Final Thoughts
Cuplock scaffolding sizes vary depending on application needs, but the most commonly used dimensions are highly standardized to ensure interchangeability and safety. When selecting Cuplock scaffold sizes, always consider the height, load requirements, and bay configurations for your specific job site.
Looking for a high quality Cuplock scaffolding system? Contact us today, We offer customizable sizes and expert support.