Page 284 - Trenchless Technology Piping Installation and Inspection

248 Cha pte r S i x

6.8.8 Drawings and Specifications
The contract documents typically include the contract agreement,
general conditions, special conditions, project plans, specifications,
geotechnical report, and CCTV records. The plans and specifications
for pipe-bursting projects should have all the required information
for a typical open-cut water or wastewater pipeline projects plus the
information listed in this section. The drawings should provide infor-
mation about the existing site conditions and the underground utili-
ties. Description of site constraints (i.e., work hours, noise, etc.) and
the procedures to review the CCTV data should be listed in the notes
section in the drawings. The drawings may also include information
to show erosion and sediment control requirements, flow bypassing
plans, and service connection and reinstatement details, and should
typically include:
• Limits of work; horizontal and vertical control references
• Topography and survey points of existing structures
• Boundaries, easements, and rights-of-ways (ROW)
• Existing utilities, sizes, locations, and pipe materials
• The verification requirements for existing utilities
• Plan and profile of the design alignment
• Existing point repairs, encasement, sleeves, and others
• Construction easement and the allowable work areas around
the insertion and pulling pits
• Details for lateral connections and connections to the rest of
the network
• Restoration plans
• Existing flow measurements for bypass pumping
• Quality control and assurance measures (Sec. 6.8.10)

The technical specifications supplement the drawings in commu-
nicating the project requirements. Information to be included in the
technical specifications should include

• General considerations
• Minimum contractor qualifications
• Permit matrix and responsibilities
• Safety requirements with focus on confined space entry,
flow bypass, and shoring
• Scheduling requirements and construction sequence
• Submittals (Sec. 6.8.9)