Soft Landings & Energy Modelling
The Royal Institute of British Architects (RIBA) Plan of Work is a comprehensive framework that guides construction projects from inception to completion; however, design teams often depart buildings and move onto the next project after handover. Despite best intentions, a performance gap usually exists between design intent and actual operations.
The RIBA Plan of Work divides a construction project into eight stages, each with specific tasks and outcomes. These stages ensure a structured approach, from defining the project's objectives to post-occupancy evaluation. Understanding these stages is crucial for achieving successful project outcomes. Traditionally, design teams are appointed at RIBA Stage 2 and work on buildings until the end of RIBA Stage 5.
The performance gap refers to the discrepancy between a building's designed and operational performance. Common causes include differences in design assumptions and real-world conditions. Often, building users are unaware of how the building should be operated, leading to further discrepancies between design and operation. Energy demand can be significantly affected if not picked up via regular checking of controls.
Addressing this gap is essential for improving building performance and sustainability.
Keeping the design team involved post-construction ensures the building operates as intended. Continuous monitoring and adjustments can significantly reduce the performance gap. Successful projects often involve the design team in post-occupancy evaluations, leading to improved performance and occupant satisfaction.
The Soft Landings framework ensures a smooth transition from construction to operation, focusing on client needs and operational performance. It comprises six phases: inception and briefing, design, construction, pre-handover, initial aftercare, and extended aftercare. Implementing Soft Landings can lead to improved occupant satisfaction and reduced operational costs.
The TM54 framework evaluates operational energy use at the design stage. Advanced energy modelling helps develop accurate energy consumption estimates for each meter. Comparing these estimates against actual usage once the building is in operation allows for identifying and addressing discrepancies, ensuring optimal performance.
At KJ Tait, we develop advanced energy models with virtual meters that reflect the building's actual meters. These are then used in operation to compare against and understand how well the building performs.
Implementing post-construction involvement and the Soft Landings framework requires collaboration between design teams, contractors, and managing agents. Continuous monitoring, feedback, and adjustments are essential for achieving optimal building performance. Practical tips include regular post-occupancy evaluations and using advanced energy modelling tools like TM54.
Post-construction involvement is critical for closing the performance gap and achieving sustainable building performance. By implementing the Soft Landings framework and using advanced energy modelling tools, we can ensure that buildings operate as intended, leading to improved performance and occupant satisfaction.