ESTIMATING COST MODELS.

This section develops several estimatingmodels that can be used at the rough, semidetailed, or detailed design levels.For rough estimates the models are used with rough data, likewise for detaileddesign estimates they-areused-withdetailed data. The level of detailwill depend upon the accuracy of the model's data.

⇒ Per-Unit Model.

⇒ Segmenting Model.

⇒ Cost Indexes.

⇒ Triangulation.

⇒ Improvement and the Learning Curve.