However, they require conduits in harsh environments due to minimal protection, increasing labor and material costs. My current plan is to run 2" or 3" PVC conduit across the two building (clamped to the underside of a metal stairwell and on each building mount a 10x10 (or whatever size is recommended) PVC box that the conduit will 90 degree down into. Out the back of the box I will penetrate into the building. Leviton's armored plenum rated Indoor/Outdoor tight-buffer cables are designed for LAN/WAN campus and building backbone infrastructure. The cables are designed for operation across wide. Non-Armored Fiber Optic Cables: Thin and lightweight, economical to store and transport. Armored Fiber Optic Cables: Can withstand heavier loads, tensile forces, and environmental. Based on installation methods, outdoor fiber optic cables are categorized as follows: Underground fiber cables are generally pulled within a conduit that is buried underground, usually 1 to 2 meters deep, to reduce the possibility of being dug up. Plan for splicing: If mass splicing is needed, ribbon cables save time. Account for future growth: Higher fiber count or duct space pays off later.
