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
