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General Supplemental Specifications

The following items were approved at the SUDAS Board of Directors meeting on May 12, 2017. The printed revisions will be distributed in the fall.

  • Qualification of bidders (various): Deleting bidder prequalification requirements to reflect changes to Iowa law.
  • Trench stabilization materials (Section 3010, 2.05): Adding a standard gradation option (Iowa DOT Gradation No. 13).
  • Welder certification (Section 3020, 2.02, B, 1): Revising to align with Iowa DOT changes in welder certification by an American Welding Society accredited facility.
  • PVC water main pipe (Section 5010, 2.01, A): Deleted references to AWWA C905 due to combining of AWWA C900 and C905.
  • Use of fly ash and slag (Section 7010, 2.02, C): Remove the restriction for use of fly ash and slag only with ready mix concrete.
  • Laser guided screed and concrete pumping (Section 7010, 3.01, B & C and 3.02, F): Adding to the specifications to allow the use of laser guided screeds and concrete pumping.
  • PCC overlay pavement (Sections 7010 and 7011): New section for PCC overlays projects.
  • HMA overlay pavement (Sections 7020 and 7021): New section for HMA overlays projects.
  • Sidewalk consolidation (Section 7030, 3.04, B): Clarify that sidewalk thickness less than 5 inches do not require use of a vibrator.
  • Form setting and testing (Section 7030, 3.04 and 3.08): Adding criteria for when the Engineer would check form work prior to concrete placement; also adding requirements for testing.
  • Pavement rehabilitation (Section 7040): Updating information on partial depth patches and added a section on dowel bar retrofit for PCC pavements.
  • Temporary traffic control (Section 8030): New section to provide standard temporary traffic control layouts.
  • Bonded fiber matrix (Section 9010, 2.07): Removing some of the physical requirements for hydraulic mulch so approval is based on performance and to align with the DOT.

Page revised: June 5, 2017