TOWER SPOT REQUIREMENT :
L& T DESIGN TOWERS WITH MOOSE / ZEBRA ACSR CONDUCTOR |
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DESCRIPTION |
TOWER TYPE |
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A |
B |
C |
D |
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Moose |
Zebra |
Moose |
Zebra |
Moose |
Zebra |
Moose |
Zebra |
Normal Span |
350 M |
370 M |
350 M |
370 M |
350 M |
370 M |
350M/210M |
370/225M |
Deviation nort to exceed wind span |
2 deg |
2 deg |
15 deg |
15 deg |
30 deg |
30 deg |
60 deg/0deg |
60deg |
a) Effect of both spans |
350 M |
370 M |
350 M |
370 M |
350 M |
370 M |
350/210M |
370/296M |
b) Effect of one span individual span not greater than (from vertical separation consideration) |
210 M |
220M |
210M |
220M |
210M |
220M |
210M/… |
220/135 |
Vertical load limitations |
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1. Max. weight span: |
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a) Ground wire |
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i) Effect of both spans |
450 M |
475M |
45M |
475M |
450M |
475M |
450M |
475M |
ii) Effect of one span |
270M |
285M |
270M |
285M |
270M |
285M |
270M |
285M |
b) Conductor |
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i) Effect of both spans |
450M |
475M |
459M |
475M |
450M |
475M |
475M |
450M |
ii) Effect of one span |
270M |
285M |
270M |
285M |
270M |
285M |
270M |
285M |
2. Minimum weight span |
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a) Ground wire: |
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i)Effect of both span |
280M |
300M |
0 |
0 |
0 |
0 |
0 |
0 |
ii) Effect of one span |
160M |
180M |
0 |
0 |
-100 |
-100 |
-150 |
-150 |
b) Conductor: |
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i) Effect of both spans |
280M |
300M |
0 |
0 |
0 |
0 |
0 |
0 |
ii) Effect of one span |
160 |
180 |
0 |
0 |
-100 |
-100 |
-150 |
-150 |
c) Permissible sum of adjacent spans for various deviation angles |
2 deg.700 |
2 deg.700 |
15deg.700 |
15deg.740 |
30deg.700 |
30deg.740 |
60deg.700 |
60deg.700 |
(provided ground Clearance span) |
0.deg.906 |
1deg.936 |
13deg.906 |
13deg.947 |
28deg.900 |
28deg.936 |
58deg.881 |
58deg.910 |
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