ASW Steel Messenger

SAG AND TENSION TABLE FOR HEAVY ICE LOADING AREAS
TWO PAIR AERIAL SERVICE WIRE - .083" STEEL MESSENGER
SPAN LENGTH
(Feet)
50
75
100
125
150
175
200
225
250
275
SAG UNDER
STRINGING
STRINGING SAG
HEAVY LOADING
TENSION(Lbs.) (Feet)- (Inches) (Feet)- (Inches)
45
0
5
1
0
45
0
10
1
10
45
1
6
2
10
60
1
9
3
8
80
1
11
4
7
80
2
7
5
9
85
3
2
6
11
90
3
10
8
2
120
3
6
9
6
175
2
11
10
9
EXPECTED TENSION
UNDER HEAVY LOAD
(Lbs.)
268
328
377
446
516
560
606
651
692
740
SIX PAIR AERIAL SERVICE WIRE - .083" STEEL MESSENGER
SPAN LENGTH
(Feet)
50
75
100
125
150
175
200
225
250
NOTES:
SAG UNDER
STRINGING
STRINGING SAG
HEAVY LOADING
TENSION(Lbs.) (Feet) - (Inches) (Feet) - (Inches)
60
0
5
0
12
60
0
11
1
10
80
1
3
2
8
80
1
11
3
9
90
2
5
4
10
100
3
0
6
0
110
3
7
7
2
120
4
1
8
5
160
3
10
9
8
Heavy ice loading is defined under NESC Rules 250 and 251 as 0.5 inch radius thickness of ice and
4 PSF horizontal wind pressure at 0º F.
Stringing tensions are at 60º F.
04/07/04
EXPECTED TENSION
UNDER HEAVY LOAD
(Lbs.)
285
346
422
471
528
583
637
688
737
Page 1 of 3
SAG AND TENSION TABLE FOR MEDIUM ICE LOADING AREAS
TWO PAIR AERIAL SERVICE WIRE - .083" STEEL MESSENGER
SPAN LENGTH
(Feet)
50
75
100
125
150
175
200
225
250
275
300
325
350
SAG UNDER
EXPECTED TENSION
STRINGING
STRINGING SAG
HEAVY LOADING
UNDER MEDIUM LOAD
TENSION(Lbs.) (Feet) - (Inches) (Feet) - (Inches)
(Lbs.)
45
0
5
0
11
226
45
0
10
1
8
275
45
1
6
2
7
315
60
1
9
3
5
376
80
1
11
4
3
437
80
2
7
5
4
472
85
3
2
6
6
512
90
3
10
7
7
549
100
4
3
9
2
564
100
5
1
10
12
568
150
4
1
11
7
643
150
4
9
12
11
674
150
5
6
14
4
705
SIX PAIR AERIAL SERVICE WIRE - .083" STEEL MESSENGER
SPAN LENGTH
(Feet)
50
75
100
125
150
175
200
225
250
275
300
325
350
NOTES:
SAG UNDER
EXPECTED TENSION
STRINGING
STRINGING SAG
MEDIUM LOADING
UNDER MEDIUM LOAD
TENSION(Lbs.) (Feet) - (Inches) (Feet) - (Inches)
(Lbs.)
60
0
5
0
11
241
60
0
11
1
9
290
80
1
3
2
6
356
80
1
11
3
6
396
90
2
5
4
6
444
100
3
0
5
7
491
100
3
11
6
10
522
110
4
6
7
11
566
125
4
11
9
6
587
150
4
11
10
5
644
150
5
10
11
10
675
150
6
10
13
4
703
150
8
0
14
11
730
Medium ice loading is defined under NESC Rules 250 and 251 as 0.25 inch radius thickness of ice
and 4 PSF horizontal wind pressure at 15º F.
Stringing tensions are at 60º F.
04/07/04
Page 2 of 3
SAG AND TENSION TABLE FOR LIGHT LOADING AREAS
TWO PAIR AERIAL SERVICE WIRE - .083" STEEL MESSENGER
SPAN LENGTH
(Feet)
50
75
100
125
150
175
200
225
250
275
300
325
350
SAG UNDER
STRINGING
STRINGING SAG
LIGHT LOADING
TENSION(Lbs.) (Feet) - (Inches) (Feet) - (Inches)
45
0
5
0
9
45
0
10
1
6
45
1
6
2
4
60
1
9
2
12
80
1
11
3
8
80
2
7
4
8
85
3
2
5
7
90
3
10
6
7
100
4
3
8
1
100
5
1
9
10
150
4
1
10
1
150
4
9
11
4
150
5
6
12
7
EXPECTED TENSION
UNDER LIGHT LOAD
(Lbs.)
166
199
224
271
319
342
370
397
402
398
460
482
503
SIX PAIR AERIAL SERVICE WIRE - .083" STEEL MESSENGER
SPAN LENGTH
STRINGING
(Feet)
TENSION(Lbs.)
50
60
75
60
100
80
125
80
150
90
175
100
200
100
225
110
250
125
275
150
300
150
325
150
350
150
NOTES:
SAG UNDER
STRINGING SAG
LIGHT LOADING
(Feet) - (Inches) (Feet) - (Inches)
0
5
0
10
0
11
1
6
1
3
2
2
1
11
3
1
2
5
3
11
3
0
4
10
3
11
6
0
4
6
7
0
4
11
8
5
4
11
9
9
5
10
11
1
6
10
12
5
8
0
13
11
Light loading is defined under NESC Rules 250 and 251 as 9 PSF horizontal wind pressure at 30º F.
and no ice.
Stringing tensions are at 60º F.
04/07/04
EXPECTED TENSION
UNDER LIGHT LOAD
(Lbs.)
182
215
266
293
329
363
384
417
429
449
470
490
509
Page 3 of 3
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