O-1998-2267 - Laserfiche WebLink

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e e Zero Dispersion Slope (So)- <0.092 ps/(runy'km) The maximum dispersion shall be ~3.3 ps/(run . km} for 1285 run through 1330 run and shall be <18 ps/(nm' Ian) at 1550 run. C.3.5 Installation Practices I. Fiber optic cable is a high-capacity transmission medium with qualities and characteristics which can be degraded when it is subjected to excessive pulling tension, sharp bends, and crushing forces. 2. The maximum pulling tension for armored cable is 2,700 Newtons (600 Ibs). 3. Maximum long-tenn crush forces for annored cable is lOON/em (57.1 Ib/in). 4. The minimum bend radius for an annored cable during installation and following installation over the life span ~fthe cable must be 20 times (20 x) the cable diameter. 5. The minimum diameter required for pull wheels or comer blocks should be double the minimum bend radius. The contractor will be responsible to check manufacturer's specifications for the cable feed-chute, to make sure that the chute's critical dimensions and clearances are compatible with the placing cable. The chute must have a 20-inch minimum radius. C.3.6 Excavation and Trenching 1. Make trench sides as nearly vertical as practical except where sloping of sides is allowed. 2. Remove all rock, boulders, hard material, unstable material, and yielding and unsatisfactory materials within the limits indicted for trench excavation and dispose of off the site. Notify the Owner's Representative immediately in writing if it becomes necessary to remove such materials to beyond the trench limits. Where excavations are deeper or wider than the trench limits in . order to remove unsuitable materials, they shall be refilled with approved borrow material. 3. Existing concrete or granite curb encountered in excavation shall be temporarily supported or replaced in kind. Bituminous lip curb shall be disposed and replaced in kind.. 4. Excavation operations adjacent to and below existing structures and utilities shall be done manually. Start hand excavation on each side of the indicated obstruction and continue until the obstruction is uncovered or until clearance ford the new grade is assured. Support uncovered lines or other existing work affected by the contract excavation until the Owner's Representative grants approval for back-fill. Report damage to utility lines or subsurface construction immediately to the Owner's Representative. 5. Place "Road Closed" signs on temporary barricades at approaches to work and uncovered trenches. 6. Keep excavated materials and construction equipment and materials a safe distance back from the edge of excavations to avoid overloading the sides of the trench and to prevent slides or cave-ins. 7. Grade areas around trench as necessary to prevent surface water from flowing into excavations. IBM Global Services & La Pone ISO peA 0 I Seplember 30, 1901S Page 20 of 32