Additional Considerations. In addition to meteorological and wind
conditions, the following factors must be considered:
Obstructions. A specific airport site and the proposed runway
orientation must be known before a detailed survey can be made of obstructions
which affect aircraft operations. Runways should be so oriented that approaches
necessary for the ultimate development of the airfield are free of all
Restricted Areas. Restricted areas are shown on sectional and local
aeronautical charts. Runways should be so oriented that their approach and
departure patterns do not encroach on the restricted areas.
Built-Up Areas. Airfield sites and runway alignment should be selected
and the operational procedures adopted which will be the least objectionable to
local inhabitants. See OPNAVINST 11010.36, Air Installations Compatible Use
Zone (AICUZ) Program, for guidance.
Neighboring Airports. Existing and potential holding and other traffic
patterns of airfields in the area should be studied, and adequate separation
between these patterns should be provided to avoid air traffic conflicts.
Topography. Avoid sites which require excessive cuts and fills.
Evaluate the effects of topographical features on: airspace zoning, grading,
drainage, and possible future runway extensions.
Soil Conditions. Evaluate soil conditions at potential sites to
minimize settlement problems, heaving from highly expansive soils, high ground
water problems, and construction costs.