On April 2016, Government Soft Landings (GSL) policy became mandatory, alongside Building Information Modelling (BIM) Level 2, on centrally-procured UK public projects. The Guiding Principles of the GSL policy made a clear reference to aspects such as early engagement of end users, a GSL directing champion on behalf of the government client, a commitment to aftercare post-construction, Post Occupancy Evaluation (POE) feedback and data to be stored on the asset information model.
Among the Key Performance Indicators to be tracked and verified, an article from RIBAJ highlighted in particular energy use, occupant satisfaction, capital and running costs, and a range of functionality metrics suited the building type and activity (for example density in offices). BSRIA Soft Landings guidance offer a range of tried and tested strategies. Post occupancy paper CIBSE TM 54, in combination with dynamic energy modelling tools, can be used by the service engineer to set and track the operational energy use of many building types.
As discussed during the QUANTUM workshop at CLIMA 2016, it is important to define an optimal timeframe which would guarantee both quality management and affordable costs for the commissioning process. Soft Landings indicates that the three-month period prior to practical completion and the three months afterwards are critical to the successful handover of a building. BSRIA SL uses the CIBSE TM 22 method for energy and the Arup BUS survey for occupant satisfaction, covering one year of operation, which cost £ 5,000-15,000 depending on the size of building. A three year more detailed evaluation can provide considerable savings to public sector departments at an increased price of the study (more than £ 30,000).
Thus a mandating post occupancy evaluation is therefore welcome in the UK. Could it be a possible answer to improve quality management of building processes in all of Europe?