NECA/NEMA 605 : 2005

Foreword
1. Scope
2. Nomenclature
3. Types of Duct
    3.1 Duct Designed for Encasement in Concrete
    3.2 Duct Designed for Direct Burial
    3.3 Duct Designed for Concrete Encasement
4. Duct Separations
    4.1 Duct Spacers
    4.2 Power Duct Banks
    4.3 Communication Duct Banks
    4.4 Combined for Specifiers
    4.5 Considerations for Specifiers
5. Handling and Storage of Nonmetallic Ducts
    5.1 Transportation
    5.2 Storage
    5.3 Handling on the Jobsite
6. Trenching Procedures
    6.1 Proper Installation
    6.2 Trench Excavation
    6.3 Trenchless Technology
7. Joining Nonmetallic Ducts
    7.1 Types of Joints
    7.2 Recommended Joining Procedures
8. Concrete Encasement of Nonmetallic Ducts
    8.1 Duct Layering
    8.2 Temperature
    8.3 Anchoring
    8.4 Concrete Pour
    8.5 Backfilling
9. Direct Burial of Nonmetallic Ducts
    9.1 Duct Layering
    9.2 Temperature
    9.3 Bends or Grade Changes
    9.4 Duct Embedment and Final Backfill
    9.5 Compacting Backfill
10. Field Bending
11. Short-Radius Bends
12. Repairing Nonmetallic Ducts
    12.1 PVC and RTRC Ducts
    12.2 PE Ducts
13. Connections to Other Duct Systems of Other Materials
14. Duct Rodding (Fishing)
15. Mandrelling
Annex A: Field-Bending Procedures
Annex B: Conduit-in-Casing
Annex C: Installation Instructions for RTRC Joints
Annex D: Reference Standards

Describes the installation, shipping, and handling of underground single bore nonmetallic duct for power, lighting, signaling, and communications applications.