Erecting and Dismantling Access/Working Platforms in the Workplace — City and Guilds of London Institute Vocationally-Related Qualification Construction & Building Services Revision
This subtopic focuses on the essential skills of safely erecting, using, and dismantling temporary access platforms (such as tubular scaffolding or mobile
Topic Synopsis
This subtopic focuses on the essential skills of safely erecting, using, and dismantling temporary access platforms (such as tubular scaffolding or mobile towers) to enable operatives to reach working heights for external wall insulation tasks. It emphasizes compliance with safety regulations, correct interpretation of work instructions, and efficient resource selection while minimizing risks to personnel, property, and the environment.
Key Concepts & Core Principles
- Thermal bridging and U-values: Understanding how EWI reduces heat loss and prevents condensation by eliminating cold bridges at junctions.
- Substrate preparation: Ensuring walls are clean, dry, and structurally sound before applying adhesive and insulation boards.
- Mechanical fixings: Using appropriate screws and washers to secure boards, with correct spacing and penetration depth as per manufacturer guidelines.
- Render systems: Applying base coats, reinforcing mesh, and finishing renders (e.g., silicone, acrylic) to protect insulation and provide weather resistance.
- Drainage and ventilation: Incorporating weep holes and cavity trays to prevent moisture ingress and allow trapped water to escape.
Exam Tips & Revision Strategies
- Ensure you take photographs and write witness statements that clearly show you following safe practices, especially for high-risk activities like erecting at height.
- Keep a detailed log of all pre-use checks and any issues encountered, as this demonstrates compliance with legislation.
- Practice assembling a mobile tower in a controlled environment before the assessment, focusing on the correct sequence to avoid any critical errors.
- Be prepared to explain your resource selection reasoning to the assessor, linking it to the specific job requirements and risk assessment.
- Document the time taken and how you managed to complete the work within the allocated time, perhaps with a timeline.
Common Misconceptions & Mistakes to Avoid
- Failing to inspect equipment before use, leading to use of damaged components.
- Overlooking the need for toe boards or brick guards, risking falling objects.
- Not checking ground conditions or using sole boards, causing instability.
- Exceeding safe working loads by overloading platforms with materials.
- Dismantling in an unsafe sequence, e.g., removing guardrails before platforms.
Examiner Marking Points
- Award credit for demonstrating the ability to interpret construction drawings, method statements, and risk assessments to identify platform requirements.
- Evidence of selecting appropriate access equipment (e.g., lightweight staging, ladders, or modular scaffolds) in accordance with the task specification and site conditions.
- Clear demonstration of compliance with the Work at Height Regulations 2005, including proper guardrail installation, toe boards, and safe ladder access.
- Show methodical assembly sequence, ensuring components are correctly fitted and platform stability is verified before use.
- Demonstrate effective dismantling procedures that ensure orderly removal and inspection for defects, with components stored correctly.
- Evidence of implementing exclusion zones and warning signs to protect others during erection and dismantling.