TOWER REQUIREMENT



TOWER SPOT REQUIREMENT :

L& T DESIGN TOWERS WITH MOOSE / ZEBRA ACSR CONDUCTOR

DESCRIPTION

TOWER TYPE

A
Tangent

B
Small angle

C
Medium angle

D
Angle / terminal

 

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

 

 

 

 

 

 

 

 

1. Max. weight span:

 

 

 

 

 

 

 

 

a) Ground wire

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

a) Ground wire:

 

 

 

 

 

 

 

 

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:

 

 

 

 

 

 

 

 

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
1 deg.804

2 deg.700
1 deg.840

15deg.700
14deg.804

15deg.740
14deg.840

30deg.700
29deg.800

30deg.740
29deg.840

60deg.700
59deg.791

60deg.700
60deg.840

(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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