Every construction project relies on more than just the visible permanent works. Behind the scenes, there is a critical process that ensures safety, compliance, and efficiency during the build phase: temporary works design. To manage this effectively, the industry follows a framework often summarised by the “3 P’s” – People, Process, and Product.
These three elements create a structured approach to temporary works. When each is handled correctly, projects run smoothly, risks are controlled, and legal requirements are met. In this guide, we break down what the 3 P’s mean in practice and how contractors, clients, and engineers can apply them.
People: Competence and Responsibility
The first “P” is about people – who is responsible for temporary works and how competence is assured.
Temporary Works Coordinator (TWC)
The TWC is at the centre of the framework. They are responsible for implementing the procedure, ensuring all designs are checked, and confirming that site teams follow the approved drawings. Their role is managerial, requiring both technical understanding and strong organisational skills.
Temporary Works Supervisor (TWS)
Working alongside the TWC, the TWS oversees the day-to-day management of temporary works on site. They ensure installations are safe, properly maintained, and inspected at appropriate intervals.
Designers and Checkers
Temporary works must be designed by a competent engineer, and the design is categorised into one of three checking levels, depending on complexity and risk. The checker must be independent from the original designer, providing assurance that the solution is safe and compliant.
Contractors and Clients
Ultimately, responsibility sits with the contractor, but clients must also ensure the project has adequate arrangements for temporary works. By appointing a qualified team, everyone involved reduces the risk of failure.hat are practical, compliant, and tailored to site conditions. This ensures contractors can deliver projects with confidence.
Process: Systems and Standards
The second “P” is the process – the management system that governs temporary works from design to dismantling.
Following BS 5975
In the UK, the benchmark is BS 5975:2019 – Code of practice for temporary works procedures and the permissible stress design of falsework. This standard sets out the framework for managing temporary works, including:
- Appointment of TWCs and TWSs
- Design check categories (0, 1, 2, 3)
- Documentation requirements
- Communication and handover procedures
Adhering to BS 5975 is essential not only for safety but also for meeting contractual and regulatory obligations.
Risk Assessment and Method Statements
Every temporary works activity must be supported by a risk assessment and method statement (RAMS). These documents identify potential hazards, detail the installation process, and provide instructions for safe removal.
Records and Documentation
Good record-keeping is central to the process. This includes:
- Design briefs and drawings
- Check certificates
- Inspection reports
- Permit-to-load forms
Without a clear paper trail, it becomes impossible to demonstrate compliance or defend against liability in the event of an incident.
Communication Between Stakeholders
Temporary works succeed when communication is strong. The TWC must coordinate between designers, contractors, and site operatives to ensure everyone understands their role. Gaps in communication often lead to mistakes, so clarity is non-negotiable.
Product: Fit-for-Purpose Design
The final “P” focuses on the product itself – the physical structures that make up temporary works.
Safety and Stability
The product must achieve its purpose safely. Whether it’s scaffolding, formwork, falsework, or excavation support, the design must withstand expected loads and environmental conditions. This includes factors such as wind, water pressure, or uneven ground.
Practicality and Efficiency
While safety is paramount, practicality matters too. Designs should be buildable, cost-effective, and suited to the project programme. Overly complex systems increase labour time and may slow down progress.
Quality Assurance
The quality of materials and workmanship affects the reliability of temporary works. Inferior equipment or poor installation can undermine even the best design. Regular inspections and adherence to the design drawings safeguard against this.
Integration with Permanent Works
Temporary systems must complement, not conflict with, the permanent structure. Designs should consider load transfer, space constraints, and the sequence of works to avoid clashes or damage.

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Bringing the 3 P’s Together
The power of the 3 P’s lies in their integration. People, process, and product are not separate checkboxes but interdependent elements of a single framework.
- Competent people manage and deliver the works.
- A robust process ensures designs are compliant, documented, and properly checked.
- Fit-for-purpose products provide the physical support needed on site.
When these three factors align, temporary works achieve their purpose: enabling safe, efficient, and compliant construction.
The Cost of Neglect
Failing to implement one of the 3 P’s can have serious consequences. A competent team without a clear process will struggle with consistency. A process without trained people leads to errors. And even the best people and processes cannot compensate for unsafe or poorly designed products.
Case studies across the industry show that neglecting temporary works often results in:
- Site accidents or collapses
- Project delays and cost overruns
- Legal action and reputational damage
By contrast, projects that follow the 3 P’s typically deliver smoother, safer outcomes.
How Imperium Engineering Supports the 3 P’s
At Imperium Engineering, we design and manage temporary works with the 3 P’s at the core of our approach. Our services include:
- Providing competent, certified designers for temporary works
- Ensuring designs comply with BS 5975 and related standards
- Coordinating with TWCs and contractors to support the process
- Delivering practical, buildable solutions that align with site conditions
From small residential projects to large commercial developments, we tailor each solution to the client’s needs, helping contractors keep projects safe, compliant, and on track.
Temporary works are the invisible backbone of construction, and the 3 P’s – People, Process, and Product – provide a clear framework for managing them effectively. By appointing competent professionals, following structured procedures, and insisting on safe, practical designs, contractors and clients can protect both their workforce and their investment.
If you’re managing a project and need expert support with temporary works design, Imperium Engineering can help. Our team provides reliable, compliant, and tailored solutions that integrate seamlessly with your build programme.
📞 Contact us today to arrange a consultation and ensure your property obligations are managed the right way.
