17.
c--para 7-20a
Determine lead-over-height ratio, 20 over 30, or 2/3.
Set lead-over-height ratio 2/3 opposite pull of 30 feet.
Read answer 12M on inner scale opposite 60 wires carried.
18.
c--para 7-21b
Determine lead-over-height ratio: to over 25, or 1-1/4.
Set ratio 1-1/4 opposite arrow marked CABLE HEAD GUY.
Read answer
30M
in
inner
scale
opposite
20M,
size
of
suspension
strand.
19.
a--para 7-22a
Determine lead-over-height ratio: 30 over 6, or 5.
Since this ratio is greater than 4, set arrow GUY TO STUB opposite
pull of 33 feet.
Read answer 10M on inner scale opposite 60 wires carried.
20.
c--para 7-23
The answer, 16M, is obtained by adding 6M (open wire system) and 10M
(cable system).
LESSON 3............................. Joint
Use
Construction
and
Construction Vehicles
References for 1 thru 20 are to Addendum A.
1.
a--para 8-1a
2.
b--para 8-3
3.
d--para 8-6a
4.
d--para 8-9b
5.
a--para 8-10d
6.
b--app II, para 4c
23
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