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Requirein-depth analysis, saving t h e and effort. The focus is retained to produce in-depthanalysis on a smaller number of higher lever issues Alexander 1991,
p.56; Dempsey et al. 1997,p.473. Both of these theories are quite evident in airport development. Al1 the commercial airport terminal in the world can be
categorized into only 4 terminal concepts. This demonstrates that while certain issues are dealt with in an exhaustive manner, many design features are only
slightly modified from project to project.
2.3 Substantive Theory In Airport Planning
An extremely important aspect of terminal planning is the elaboration of the Substantive category of planning. Substantive planning is concerned with
what do I have, how about and what we are planning for and whom we are planning for Alexander 1991, p.7. This type of planning bases itself on an in-
depth analysis of the subject. This form of comprehensive analysis, into what and whom we are planning for, is essential in order to develop a terminal that serves
the type of passengers that are using that airport. Distinguishing between transit passengers and originatingariving passengers is as important as knowing the
volume of passengers. Different types of passengers utilize different areas and components within the terminal building, thus placing pressure on different links
in the system. Designing a terminal complex that is incompatible with the type of passengers using the airport can lead to serious processing and flow problems
within the terminal system.
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As a result, it is of utmost importance to know whom you are designing the terminal building for. What are the characteristics of these users? Can they be
properly accommodated within the system? Another range ont0 which substantive planning is necessary is the understanding and adjustments according to local
population issues such as culture, civic pride, local customs etc. Generic development processes dont take into account such distinctions, however, the
overall acceptance and evaluation of a project do rely heavily on a positive overall perception from the user population, travelers and locals alike.
In a continuance of who we are planning for, aviation forecasting plays a major role in the quantitative side of airport development. Forecasting volume and
demand for service in the cynical industry is extremely difficult even with modem technological aids. Over reliance on forecasts could lead to design shortcomings
or misplaced funds. What may occur are expansive, overbuilt, undammed and inefficient terminals. Taking into account this and other major uncertain variables,
the airport planning process as well as the terminal building design must remain flexible.
2.4 FlexibilityIn Airport Planning and Development
