Input Variables Impacting Design Effectiveness
Over 40 input variables that may impact design effectiveness were identified during the research, while the 10 input variables, listed below, were identified as having the greatest impact on design effectiveness. The magnitudes of the impact of each of these input variables are identified in the research along with recommendations for each of these 10 input variables. Overall failure to manage design input could increase total project cost by 25 percent or more. (RS8-2, p. 11)
- Scope Definition
- Owner Profile and Participation
- Project Objectives and Priorities
- Pre-Project Planning
- Basic Design Data
- Designer Qualification and Selection
- Project Manager Qualifications
- Construction Input
- Type of Contract
- Equipment Sources
Further design effectiveness is measured by design outcome parameters and the research identified 25 outcome parameters. These seven outcome parameters were selected as the key outcomes to measure the effects of the above 10 input variables on design effectiveness.
- Final Project Schedule
- Constructability
- Quality of Design
- Final Project Cost
- Plant Start-Up
- Performance
- Safety
Source Documents, SD-19 and SD-26, provide supporting research details for Key Finding # 2.
