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The surface specification of a runway is related to the complete runway as a physical element and not related to the different runway directions.
For the runway PANS-AIM requires to provide the surface type and its strength defined by a Pavement Classification Number (PCN).
In AIXM 5 the SurfaceCharacteristic.composition attribute is used to code the surface type, e.g. asphalt, concrete, grass, etc.
For coding the PCN a set of attributes is provided by the SurfaceCharacteristic class.
The SurfaceCharacteristic class groups together the more attributes that to model the characteristics of an airport surface, such as strength, materialpreperation, surface condition, LCN, SWIL AUW, etc.
For detailed information about the ncoding of the PCN and other the surface characteristic attributes & corresponding rules please refer to topic Surface Characteristic [SCH].
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