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Smoothwall

Fiber Optic Technology

Smoothwall HDPE is the most commonly used underground raceway and is typically packaged in continuous lengths on reels or coils allowing for fast installation with minimum joints. Smoothwall can be installed via trenching, plowing and directional drilling. Smoothwall is available in numerous colors and stripe combinations for easy identification. There are numerous wall thicknesses available as required to meet the particular installation methods and ground conditions.

Bull-Line pull tape can be pre-installed in Smoothwall.  This eliminates the need to install a measuring or pull tape after installation.

Dura-Line Smoothwall HDPE Conduit is made to Industry Standards for Power and Communications Applications. It can be installed using open trench methods, HDD (Horizontal Directional Drilled) Plowed, or pulled into conduit. There are also versions available for aerial applications.

With optional SilicoreTM Permanently Lubricated Lining, Smoothwall duct can be maximized for greater pulling and jetting distances, reducing the coefficient of friction over standard HDPE conduit.

Bend Radius and Safe Working Load

Trade Size OD (in) Bend Radius (in) Safe Working Load (Lbs.)
    Supported Unsupported SDR 9 SDR 11 SDR 13.5 SDR 17 SCH 40 SCH 80
1/2" 0.84 8 16 525 440 365 295 601 768
3/4" 1.05 10 20 821 687 570 460 798 1,040
1" 1.315 13 26 1,288 1,078 894 722 1,340 1,533
1 1/4" 1.66 17 34 2,052 1,717 1,425 1,150 1,604 2,116
1 1/2" 1.9 19 38 2,688 2,249 1,867 1,507 1,919 2,564
2" 2.375 24 48 4,200 3,515 2,917 2,355 2,579 3,545
2 1/2" 2.875 29 58 6,155 5,151 4,274 3,450 4,090 5,409
3" 3.5 39 78 9,122 7,633 6,335 5,114 5,348 7,238
4"* 4.5 50 100 15,080 12,618 10,472 8,453 7,618 10,578
5 5.563 61 122 23,045 19,284 16,004 12,918 10,320 14,669
6" 6.625 73 146 32,684 27,349 22,697 18,321 13,395 20,172

Notes:

1. Supported bend radius for 1/2" through 2 1/2" is 10 times the OD while the unsupported bend radius is 20 times the OD. Supported bend radius for 3" rthrough 6" is 11 times the OD while the unsupported bend radius is 22 times the OD. Supported bend radius for 8" through 16" is 18 times the OS while the unsupported bend radius is 27 times the OD.

2. During cable placement, large sweeping bends are recommended in place of tighter bends. Preformed sweeps are recommended for conduit sizes 8" through 16" diameters.

3. "Safe Working Load" is calculated using a 20% safety factor with the minimum resin tensile of 3000 psi, the average OD and minimum wall thickness.

4. Depending on wall type, conduits 4” and larger may be available in straight lengths only, rather than coils or reels.

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