TM 5-822-5/AFM 88-7, Chap. 1
developed to aid in the design of pavements for
identical to the data required by the design manual,
roads, streets, and open storage areas. The pro-
and the results obtained from the pro- gram should
grams were developed on an IBM PC-AT using
be close to the results obtained from the design
FORTRAN 77 as the development language with
curves. Because the computer program recalculates
Microsoft's FORTRAN Compiler (version 3.2) and
data and approximates certain empirical data, there
MS-DOS (version 3.1) as the operating system.
may be some minor differences in results from the
Normally, the programs will be furnished as a
program and from the manual. If significant
compiled program which can be executed from
difference are obtained contact HQUSACE
floppy diskettes or hard drives. Thus far all the
(CEMP-ET).
c. Program names. The flexible pavement road
programs have been run on IBM PC-AT or IBM
compatible microcomputers containing a minimum
design program is FRD 904, and the rigid pave-
of 512K RAM.
ment design program is RRD 805. The numbers in
b. Use of programs. In development of the com-
the name refer to the date of the program. The first
puter programs, an effort was made to provide a
digit is the year of the revision. The last two digits
user friendly program requiring no external in-
of the program name is the month of the re- vision.
structions for use of the programs. Aside from in-
Thus, the program FRD 904 is the flexible road
structions for initiating execution, which is standard
design program that was revised in April 1989.
for any executable program, the user is lead
Care should be taken that the latest version of the
through the design procedure by a series of ques-
computer programs is being used. If there is doubt
tions and informational screens. The input data re-
concerning a program, contact HQUSACE
quired for pavement design by the program are
(CEMP-ET).
1-2
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