Cable Locators can find the exact path and even estimate the depth of the utility service. Investing in a ground penetration radar (GPR) is the best investment for fail-safe trenching. In extreme cold climates, cables may need to be buried at greater depths where there temperatures are colder and frost penetrates to. Conventional trenching is suitable for open areas, while narrow trenching or horizontal directional drilling (HDD) is often preferred in urban or high-traffic environments to minimize disruption during underground fiber optic cable installation. Using Conduits to Protect Underground Fiber Cables In. A practical, engineering-focused guide to planning and installing underground fiber optic cables with the right cable structure, trench design and protection level for long-life, low-risk networks. Match trench method with the correct underground fiber structure (GYTS, GYTA53, GYTY53, micro-duct). An ideal trench for fiber-optic cable installation, the narrow, small trench enables contractors to install fiber shallower than other utilities with minimal disruption to the surrounding. 1. The methods described are intended for guideline use only, as it is impossible to cover all the various conditions that may arise during an installation.
