Figure 2-1. Installation map showing typical pavement branches.
Table 2-1. Branch Codes.
an intersection. The structure should be checked if there
is doubt as to which pavement would continue through
the intersection. Some guidelines for dividing pavement
First Letter in
network branches into sections are:
Type of Branch
(a) Pavement structure. Structure is one of" the
most important criteria for dividing a branch into sections.
Structural information is not always available for all
branches of a pavement network. To collect structure
information, available construction records can be
searched and patching repairs can be observed. In
addition, pavement coring programs can be developed to
pavement sections or to verify existing information.
(b) Traffic. The volume and load intensity of traffic
Table 2-1. Branch Codes
should be consistent within each individual section.
(c) Construction history. All portions of a section
occur at roadway intersections should also be placed in
should have been constructed at the same time.
separate sections. However, it must be remembered
Pavement constructed in intervals should be divided into
that the major section's structure usually carries through