Requirements for the depth of optical cable trenches
Under Roadways or Driveways: 36 to 48 inches (90 to 120 cm) deep, often within a conduit for added protection. In extreme cold climates, cables may need to be buried at greater depths where there temperatures are colder and frost penetrates to. However, simply hitting this depth isn't enough to guarantee your network survives. specifications under which the various work for trenching & laying of optical fiber cable are to be executed by the Vendor. Where plant life, sidewalks, and other utilities already disrupt earth, it's safer to bury at as little as 24 inches or 60 cm, using protective conduits to limit the likelihood of damaged cables by inexperienced maintenance or gardeners.
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