HomeMy Public PortalAboutSummary of Proposed Changes to Standard Construction Specifications 2009Summary of Proposed Changes to Standard Construction Specifications 2009
General Overall Comments
• Revised grammar, capitalizations, inclusive language
• Where plans and specifications are mentioned it was changed to Project Plans and Specifications
• Where standard details are mentioned it was changed to Standard Details of Sewer Construction
• Defined terms were capitalized, Terms were updated, and language modified to add clarity.
• Sections were added from the MSD Master Technical Specification document.
• Responsible Party & Documents clarified throughout these specifications
• Materials, methods and procedures were updated to meet current standards and specifications
Part 1 General Conditions
• Revised Definitions
o Acceptance of work
o Base
o Bio-stabilization
o Change order
o Contract bond
o Contractor
o Developer
o Direct Conflict
o Director
o Easement
o Engineer
o Force Main
o Project Plans and Specifications
o Proposal Guaranty
o Roadway
o Sanitary Sewer
o Shop Drawings
o Standard Details of Sewer Construction
o Subcontractor
o Temporary Construction License was changed to Temporary Construction Easement
o Utilities
• Added New Definitions
o Contract Documents
o Local
o Private Connection
o Private Lateral
o Rock Blanket
o Rock Lined Channels
o Storm Water
• Deleted Definitions
o House Connection – replaced with Private Connection
o House Lateral – replaced with Private Lateral
o Specifications – included in Project Plans and Specifications definition
o Work Day
• Contractor chain of communication clarified
• The document was revised to reflect actual practices and provide consistency with other MSD
contractual documents
Part 2 Materials of Construction
• The document was revised to reflect actual practices and materials were updated to meet
current standards and specifications. - Type B Joints, Adapters and couplings, GEOTEXTILE
FABRIC
• Added section on Ductile Iron Castings
• Added additional information on damp-proofing and water proofing
• HDPE was removed for use except for use in forcemain and added composite sewer
• Nonreinforced Concrete Sewer Pipe was removed as an allowable material
• PROTECTP 401 Ceramic Epoxy or approved equal is required for ductile iron pipe
• Corrugated metal Pipe was removed as an allowable material
• Added Section on Forcemain ductile iron and fiberglass pipe
• Deleted Section on High Density Polyethylene (HDPE)
• Updated Section on fiberglass pipe
• Added Section on Corrugated Polypropylene Pipe and Pipe for Pipe Bursting
• Updated materials for MSD 4, MSD 5, MSD 6, MSD 7, MSD 8
• Removed Gabion Baskets Section
Part 3 Excavation
• The document was revised to reflect actual practices and current standards and specifications. -
Service Lateral coordination and responsibility
• Added additional information on Utility coordination and construction
• Clarified unsuitable subgrade procedures
• Added additional information on sanitary sewer laterals
Part 4 Pipe Sewer Construction
• The document was revised to reflect current methods and procedures and current standards
and specifications
• Removed trench boxes from this document
• Updated Testing information
• Added Rubber O ring gasket information on concrete pipe
• Added section on Manhole Cover and Frame seals
• Updated backfill section to reflect current practices
• Added Low Density Cellular Concrete (LDCC)
• Added Special Structures payment section
• Added lateral payment section
Part 5 Concrete Construction
• Removed Grouting of rip-rap as it is not allowed by Core of Engineers
• Added Low Density Cellular Concrete (LDCC) to flowable fill and added testing section
Part 6 – Newly named Stormwater / Channel Construction
• Added Section on Stormwater Management
• Removed Reinforced Concrete Channel Construction from this document
• Removed Gabion Basket Channels from this document
• Removed payment of Paved Channel and Box Culverts from this Document
Part 7 – Trenchless Sewer Construction
• Formatted so all trenchless technology alternatives were combined to the same section with
similar information and organization
• Clarified submittals
• Added Inspection Closed Circuit Television
• Added pipe bursting information in the same format as the tunneling alternatives
• Added point repair information
• Added Low density cellular concrete information
• Clarified Payment of trenchless construction items
Part 8 – Protection and Restoration of Site
• Updated General Requirements to mirror our current sewer use ordinance (SUO)
• Added the ability of the contractor to make agreements with property owners for additional
working room or access
• Updated Land Disturbance Activity section to include requirements when land disturbance is
less a one acre including Storm Water Pollution Prevention Plan (SWPPP) and best management
practices (BMP) requirements
• Sod and Seed requirements clarified
Part 9 – Miscellaneous
• Pavement, Sidewalks and Driveway payment has been clarified
• Outlet Structures section updated to remove corrugated metal pipe
• Pump Station abandonment notice changed to 7 days
• Ferrous Forcemains should be drained prior to abandonment
• Added detail to the sign requirements