Urban Areas: 25–40m spacing (concrete poles, 10–12m height)., steel lattice structures). Factors: Cable weight (kg/km) Ice loading (up to 50mm. The Fiber Optic Association, Inc. (FOA) was founded in 1995 to help develop the workforce to build the fiber optic networks to support a rapid expansion in communications and the Internet. FO-VC2 JOINT USE - VERICAL MIDSPAN CLEARANCES 48. While fiber optic cables are typically stronger than copper cables, it is still important that the cable maximum pulling tension not be exceeded during any phase of cable. Tensile Strength: Minimum 1,500N for short spans, up to 12,000N for long-distance ADSS cables. Temperature Range: -40°C to +80°C for outdoor durability. Bend Radius: ≥20x cable diameter to prevent microbending loss. In high-load areas such as roads or backbone routes, burial depth can reach 48 inches (120 cm) or more. Although the standard covers premises installations, many of the provisions included here ar SI/ NFPA 70, the National Electrical Code (NEC). It is the responsibility of users.
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