1 Calories Burned For Walking: 3.15 mph (19 minutes per mile). 2  Calories Burned For Walking: 2.85 mph (21 minutes per mile). 3  Calories Burned For Treadmill: 5 mph (12 minutes per mile).4  Calories Burned For Treadmill: 5.45 mph (11 minutes per mile). Calories Burned For Walking: 3.15 mph (19 minutes per mile). 2  Calories Burned For Walking: 2.85 mph (21 minutes per mile). 3  Calories Burned For Treadmill: 5 mph (12 minutes per mile). 4  Calories Burned For Treadmill: 5.45 mph (11 minutes per mile).
Direct Burial of Cables or Conductors. Underground feeder cables, labeled UF, can be buried without additional protection from conduits because they have a tough jacket designed for burial. Bury UF cables 24 inches below the soil surface, and 18 inches deep when protected by 2 inches of concrete. For all other applications, the burial depth is the same as specified for conduits, except that conduits are required for UF cables in 2 inches of solid rock.
An alternative technique is to bury duct and blow cables into the ducts as is done in underground installations. Typically trunk cables in most areas are installed 3-4 feet deep (1-1.2 m), but in residential or urban areas, cables may be buried only 2 feet (0.6 m) deep.se of Innerduct It may be prudent to install critical indoor fiber optic cables inside bright orange âinnerductâ to ease cable installation and protect it from future damage. Bright orange innerduct will identify fiber optic cable to any workers at a later date and possible prevent damage.