Various-sized HDDs, utility tractors, microtrenchers and support equipment are designed to fit the space where the work is being done. Whether your crews are busy laying fiber to connect urban and rural areas or performing short fiber drops within the community, Vermeer offers vibratory plows, microtrenching equipment, horizontal directional drills (HDDs), vacuum excavators, tooling and the support equipment you need to help make. The purpose of this document is to specify the procedure for excavation backfilling and trench preparation for installation of 132 kV cables and fiber optic Cables. Roles & Responsibilities Project Manager: Lead all construction activities and enforce strict adherence to all procedures. Site. Dura-Line manufactures standard High Density Polyethylene (HDPE) conduits for standard installation applications such as standard underground, as innerducts in existing conduits, or corrugated products to use in congested areas. HDPE is a flexible and resilient material. In extreme cold climates, cables may need to be buried at greater depths where there temperatures are colder and frost penetrates to. Tesmec offers an integrated value chain with specialized solutions: underground utilities detection and mapping, trenching, vacuum, home connection, backfilling, and road surface finishing.