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2
2
H
+ (V-I)
WC
T
=
A
H I
2
2
L=
H
+ V
2
2
S
H
+ (V-I)
Wi = Weight of segment i, in Newton.
T
=
A
H I
Ci = Horizontal distance from the guy attachment on the tower to the center
of gravity of segment, in m.
N = Number of segments.
2
2
H
+ (V-I)
WC
T
=
A
N
H I
S=
W
C
i
i
i=1
If the intercept is difficult to establish, one may use the guy slope at the anchor
end with the following equation:
2
2
S
H
+ (V-I)
2
1+tan
WC
T
=
T
=
A
A
H I
( V- H tan )
Where:
N
a = guy angle at the anchor (see figure 7).
2
2
H
S=
+ (V-I)
W
C
i
i
2
=
1+tan
l = V - H tanα
i=1
H
And
2
WC
1+tan
T
=
A
( V- H tan )
WC may be replaced with S.
2
2
H
+ (V-I)
=
2
1+tan
H
Dynamometer
Come-Along
PULSE METHOD
Pulse travels up and down the
guy N times in P seconds.
Fig. 6.- Method of Measuring Initial Tension
Turnbuckle
DYNAMOMETER METHOD
As come-along is tightened
dynamometer carries full
load when turnbuckle is fully
slackened.
(Nuts break free)
a
b
SWING METHOD
Guy swings from a to b
and back N times in P se-
conds.
C
I
V
H
T
A
Fig. 7.- Tangent Intercept Method
V
T
A
Fig. 8.- Relationship Between Guy Tension at Anchor and at Mid-Guy
C
I
W
L
T
M
W
H
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