AASHTO R 63:13(2017) Standard Practice for Solid Wall High-Density Polyethylene (HDPE) Conduit for Non-Pressure Applications Used for the Protection of Power and Telecommunications Cables.
Significance—High-Density Polyethylene (HDPE) conduit is a protective pathway for telecommunications and power cables used throughout the infrastructure. The inherent properties of HDPE such as chemical resistance and stress crack resistance are well suited for infrastructure systems, as these require long service life.
Because of HDPE coilable conduit’s long lengths, flexibility, and tensile strength. ills ideally suited for HDD (horizontal directional drilling) installation methodologies and construction by plowing along highway rights-of-way. HDPE sticks (20- to 40-ft lengths) arc used for larger sizes ranging from 6 to 12 in. and sometimes larger when the installation requires multiple pathways (innerducts) to run through one service pathway.
4.2. Use— The following lists the different areas for each segment, but use is not limited to the list:
1. Telecommunications—fiber optics, CATV, CCTV, or FTTH along highway rights-of-way; and Intelligent Transportation Systems (ITS).
2. Data Acquisition—SCADA (Supervisory Control and Data Acquisition) Systems for Positive Train Control Technology; pipeline control; weigh stations and SMART bridges (structural monitoring): Intelligent highway Systems (ITS); traffic control and highway monitoring systems; road condition sensors; and security.
3. Power Systems— -electrical cables rated for 600V to 69kV (distribution and transmission lines), highway lighting systems, Intelligent Transportation Systems (ITS), traffic control and highway monitoring systems, and airport lighting systems.
Note 3-—Power conductors rated at 90°C and medium voltage cable rated at 105°C are permitted for use with IIDPE conduit. Per NEC Code 2011, Article 353, conductors or cable rated at higher temperatures arc permitted, provided they do not operate at a higher temperature than the rating for HDPE conduit.
4. lnstallation——HDD, plowing and open cut: underground installations, either direct buried or concrete encased; and new installations, existing installations, or any additions/alterations.AASHTO R 63 pdf download.