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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