Understanding CDM Space Rams for Scaffolding: A Contractor's Guide

What Are CDM Space Rams in Scaffolding?

In the context of UK construction and CDM 2015, a space ram is a temporary, sloped assembly used as part of scaffold systems. Its primary purpose is to provide safe access for personnel and equipment between different working levels on site, particularly for tasks like loading and unloading materials. It is distinct from a standard ladder access point and is designed to accommodate a higher volume of movement and heavier loads. Under CDM 2015, its design, erection, and use fall squarely under the duties of the Principal Contractor and contractors involved in the construction phase.

Understanding and correctly implementing space rams is not just good practice; it's a legal requirement tied to ensuring safe access and egress as mandated by the Construction (Design and Management) Regulations 2015 and the Work at Height Regulations 2005.

CDM 2015 Responsibilities for Scaffolding with Space Rams

The CDM Regulations place specific duties on all parties when a scaffold featuring a space ram is part of the project. Failure to manage these duties correctly can lead to enforcement action and significant risk.

Principal Contractor Duties

The Principal Contractor (PC) holds the central role. They must plan, manage, and monitor the construction phase to ensure health and safety. For a scaffold with a space ram, this includes:

• Appointing a competent scaffolding contractor to design and erect the structure.

• Ensuring the design of the space ram is suitable for its intended use, considering the slope, width, load capacity, and surface.

• Coordinating the scaffold erection and use with other site activities to prevent clashes or dangers.

• Ensuring the scaffold, including the space ram, is inspected by a competent person after erection, after any substantial alteration, and at intervals not exceeding 7 days.

• Providing clear information, instruction, and supervision to workers using the space ram.

Scaffolding Contractor Duties

The scaffolding contractor (acting as a contractor under CDM) has specific, non-negotiable duties:

• Providing a suitable design, often from a scaffold design engineer, that accounts for the loads and forces on the space ram.

• Erecting, altering, and dismantling the scaffold strictly in accordance with that design and industry best practice (e.g., SG4:22 for preventing falls).

• Handing over the completed structure with a scaffold tag system clearly indicating its status and any limitations.

• Communicating any specific risks or usage instructions to the Principal Contractor.

Worker and Site Manager Duties

All individuals must cooperate with site rules. This means using the space ram as intended, not overloading it, reporting any defects immediately, and never altering the structure unless authorised and competent to do so. Site managers must enforce these rules.

Key Safety Considerations for Space Rams

Beyond the CDM administrative duties, practical safety is paramount. Key considerations include:

• Slope and Dimensions: The ramp must not be too steep. Industry guidance suggests a maximum slope (e.g., 1 in 3) to prevent slips and trips. It must be wide enough for the intended traffic.

• Surface and Traction: The walking surface must be slip-resistant. Using boarded platforms with adequate fixings and, if necessary, additional non-slip material is essential, especially in wet or muddy conditions.

• Edge Protection: The space ram must have full edge protection (guardrails and toe boards) on all open sides, just like any other working platform.

• Load Capacity: The design must clearly state the safe working load, considering both distributed loads (e.g., workers walking) and point loads (e.g., trolleys or material bundles). This limit must be strictly adhered to.

• Access and Egress: The top and bottom landing areas must be clear, safe, and well-lit. There should be no trip hazards or obstructions where the ramp meets the level.

Common Compliance Pitfalls to Avoid

Inspectors frequently find the same issues on site. Avoid these common pitfalls:

1. No Formal Design: Erecting a space ram 'by eye' or based on past experience without a specific design is a major failure. It is a designed temporary works structure.

2. Inadequate Inspections: The space ram must be included in the regular 7-day scaffold inspection by a competent person. It cannot be overlooked.

3. Overloading and Misuse: Using the ramp to store materials, allowing plant vehicles for which it wasn't designed, or exceeding the personnel load are serious breaches.

4. Poor Handover: The scaffolding contractor must provide clear information. If the PC and workers don't know the load limits or specific conditions of use, they cannot manage the risk.

5. Lack of Coordination: Failing to coordinate the ramp's location with other site traffic or deliveries creates collision and strike risks.

Best Practice Summary

To ensure CDM 2015 compliance for scaffolding with space rams, follow this checklist:

• Treat the space ram as a key temporary works item requiring a design from a competent person.

• Formally appoint a competent scaffolding contractor and ensure they provide a design, method statement, and handover information.

• Integrate the space ram into your Construction Phase Plan, covering its use, inspection regime, and load management.

• Provide clear toolbox talks to all workers who will use the ramp, emphasising load limits and safe practices.

• Ensure robust inspection and defect reporting procedures are in place and acted upon immediately.

In essence, a CDM-compliant space ram is not an afterthought. It is a carefully planned, designed, and managed piece of equipment critical to safe site logistics. By understanding the specific duties under CDM 2015 and adhering to fundamental safety principles, contractors can ensure this common scaffold feature enhances productivity without compromising safety.