Chapter 5: Traversing and Traverse Computations
I. Error of Closure
a. The linear error of closure
(LEC) is usually a short line
of unknown length and
direction connecting the
initial and final stations of
the traverse.
b. It is approximately
determined by plotting the
traverse to scale, or more
exactly by computing the
hypotenuse of a right
triangle whose sides are
the closure in latitudes and
the closure in departures,
respectively.
c. This quantity reflects the
algebraic sum of all the
accumulated errors of
measurement both in
angles and distances when
running the traverse.
d. The length of the linear
error of closure and the
angle that this line makes
with the meridian is
determined by the
following equations
e.
