lStep 2: Sort the engineering
specifications by type
»Prescriptive (constraints)
»Procedural
»Performance
lStep 3: Quantify each
engineering specification
»Engineering specifications should be
quantified
»Express specifications as a range with limits
or specific values
(in the case of constraints)
»Quantifying may lead to more detailed
specifications
»For example:
Product accommodates
various hand sizes
•Grasping
surface can be held by the 95 percentile 4 year old
•Average
diameter of grasping surface < 25mm.
The Performance Specification Method