Division 3 Table of Contents

 

Section 3010 - Trench Excavation and Backfill

 

Part 1 - General

 

1.01      Section Includes

 

1.02      Description of Work

 

1.03      Submittals

 

1.04      Substitutions

 

1.05      Delivery, Storage, and Handling

 

1.06      Scheduling and Conflicts

 

1.07      Special Requirements

 

1.08      Measurement and Payment

 

Part 2 - Products

 

2.01      Materials Excavated from a Trench

 

2.02      Bedding Material

 

2.03      Backfill Material

 

2.04      Topsoil

 

2.05      Stabilization (Foundation) Materials

 

2.06      Special Pipe Embedment and Encasement Material

 

Part 3 - Execution

 

3.01      Trench Excavation

 

3.02      Rock or Unstable Soils in Trench Bottom

 

3.03      Trench Protection

 

3.04      Dewatering

 

3.05      Pipe Bedding and Backfill

 

3.06      Trench Compaction Testing

 

Figures

 

3010.101           Trench Bedding and Backfill Zones

 

3010.102           Rigid Gravity Pipe Trench Bedding

 

3010.103           Flexible Gravity Pipe Trench Bedding

 

3010.104           Pressure Pipe Trench Bedding

 

3010.105           Miscellaneous Pipe Bedding

 

3010.901           Sewer Pipe Support Over Existing Utility Line

 

3010.902           Reinforced PCC Beam Utility Line Support

 

3010.903           Flowable Mortar Fill Utility Line Support

 

Section 3020 - Trenchless Construction (Boring, Jacking, and Tunneling)

 

Part 1 - General

 

1.01      Section Includes

 

1.02      Description of Work

 

1.03      Submittals

 

1.04      Substitutions

 

1.05      Delivery, Storage, and Handling

 

1.06      Scheduling and Conflicts

 

1.07      Special Requirements

 

1.08      Measurement and Payment

 

Part 2 - Products

 

2.01      Carrier Pipe

 

2.02      Casing Pipe

 

2.03      Casing Spacers

 

2.04      Backfill for Abandoned Tunnels

 

2.05      Backfill Material

 

2.06      Casing End Seal

 

Part 3 - Execution

 

3.01      Excavation

 

3.02      Sheeting, Shoring, and Bracing

 

3.03      Dewatering

 

3.04      Trenchless Installation

 

3.05      Pit Restoration

 

3.06      Utility Locating Site Restoration