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 Required hardware
The following are recommended minimum hardware requirements for run-
ning the LTFATE interface on a PC with a standard Disk Operating System
(DOS) Version 3.3 or greater:
a. 386-25 MHZ processor (faster processors are recommended, they greatly
reduce execution time).
b. Math coprocessor.
c. 620 K resident memory.
d. VGA monitor (required).
e. Hard disk with several megabytes free.
f.
HP LaserJet II or III (or compatible) printer for hard copy.
A compiler is not required because the LTFATE interface and model are
distributed as executable files together with several data files. The PC version of
the LTFATE interface may access all memory within the 640-K DOS limit.
Therefore, the LTFATE interface should be run from the DOS prompt with all
resident memory programs removed to ensure enough memory exists for model
execution. The graphic routine provided in this package, HGRAPH,1 is non-
proprietary and property of the U.S. Government.
Program files
The LTFATE package presently consists of the following three main
programs:
a. PC_WAVEFIELD.
b. PC_TIDAL.
c. PC_LTFATE.
LTFATE in its entirety may be used as a complete site evaluation package, or
individual programs may be accessed independently for other applications.
PC_WAVEFIELD creates a time series of wave height, period, and direction
based on the computed intercorrelation matrix describing the statistical proper-
ties of wave height, period, and direction, and their respective interrelationships.
1
The program HGRAPH was developed by Mr. David W. Hyde, Structural Engineer, WES,
Structures Laboratory, Vicksburg, MS.
F5
Appendix F LTFATE Model
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