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FIGURE 3-14. PLAN VIEW OF AN ADVANCED-BASE AIRFIELD - 14071_76
Figure  3-16.Typical  flexible  pavement  and  terminology. - 14071_78

Engineering Aid 2 - Intermediate Structural engineering guide book
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Figure 3-15.-Runway approach zone. AIRFIELDS Road construction and airfield construction have much  in  common,  such  as  construction  methods, equipment  used,  and  sequence  of  operations.  Each  road or airfield requires a subgrade, base course, and surface course.  The  methods  of  cutting  and  falling,  grading  and compacting, and surfacing are all similar. As with roads, the responsibility for designing and laying out lies with the  same  person-the  engineering  officer.  Again,  as previously  said  for  roads,  you  can  expect  involvement when airfield projects occur. In  this  section,  you  will  be  introduced  to  airfields and airfield terminology. More information on airfields will be discussed in a later chapter of this TRAMAN. AIRFIELD TERMINOLOGY Figure 3-14 is a plan view of a small advanced-base airfield. Afield of this type is constructed for operational use in a combat area. It contains a minimum of servicing facilities and is not intended for permanent occupancy. Some of the terms shown in the figure are defined as follows: APPROACH   ZONE.   A   trapezoidal   area established at each end of a runway. The approach zone must be free of obstructions on the plane of a specific glide angle. (See fig. 3-15.) APRON. A stabilized, paved or metal-plank surface area, designed for the temporary parking of aircraft 3-15







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