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