This research has investigated the management of the concept and schematic design stages
with particular reference to brief development, the exchange of design and cost information
between the client and designers, and the impact of early design decisions on construction.
A critical review of current practice by both literature review and case study revealed that
early stage design often failed to meet the expectation of clients leading to frequent
redesign and inaccurate cost advice. Poor communication of information between all parties
was primarily to blame. This led to the research combining the three elements, design, cost,
and risk and developing a Scheme Design Process Model (SDPM) based on ADePT
principles to provide designers for the first time the opportunity to:
• Accurately and systematically, plan ahead for the work required during the scheme
• Identify conflicts that lead to iterative problems.
• Mitigate iterative problems by identifying and recording the design risks source.
• Qualify the accuracy of the cost advice based on the progress of the design.
• Ensure closer cross-disciplinary cooperation.
• Reduce overall project timescale.
The research identified that a generic programme of work can now be produced that
includes all major elements for the multi-disciplinary design team. The research provides a
contribution to the design-modelling database by introducing and demonstrating flexibility
between design stages. In addition to the SDPM the research has also addressed
accountability within the decision making process by demonstrating QFD techniques that
can be applied at various stages of early design.
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.