April 2023 Agenda

The files included below have not been approved by the Board of Directors and are merely DRAFT revisions to the SUDAS manuals.


  1. Election of officers
    According to the corporation bylaws, the districts are to elect a Chair and a Vice-Chair every two years.
  2. Minutes of the previous meetings and schedule of district meetings
    The minutes of the previous meetings will be considered.  The schedule of district meetings will be presented.

Design Manual Items

  1. Time of concentration (Section 2B-4, B, 1, b and 3, c)
    Modified discussions on minimum time of concentration.
  2. Storm distribution for hydrograph routing (Sections 2A-4, 2B-4, and 2B-5)
    Updated to new NRCS region-specific storm distributions.
  3. Complete streets (Sections 5C-1, 5C-2, 5M-1, 12A-1-5, 12B-1-3, 13A-3, and 13A-4)
    An IHRB project to develop a DOT Complete Streets Policy proposed updates to several sections.  These changes are included in Chapter 5 (geometric tables and elements and complete streets), Chapter 12 (sidewalks, bicycles, pedestrians, and accessible traffic signals), and Chapter 13 (pedestrian elements in traffic signal design).
  4. Erosion and sediment control regulatory requirements (Section 7B-1, B, 3 and C, 3)
    Updated the regulatory elements to match the new NPDES General Permit No. 2 requirements, effective March 1, 2023.
  5. Erosion and sediment control (Sections 7E-1, 7E-3, 7E-7, 7E-8, 7E-12, 7E-13, 7E-14, 7E-15, 7E-17, 7E-21, 7E-30, and 7E-31)
    The SUDAS Erosion and Sediment Control Committee proposed various revisions to Chapter 7.

Specifications Manual Items

  1. Release of bid security (Section 1020, 1.15, C)
    Clarified the release of bid security to unsuccessful bidders.
  2. Storm sewer joint opening (4020, 3.05, B, 3)
    Modified joint opening requirements for gasketed storm sewer.
  3. Double grate intake with manhole (new Figure 6010.516)
    Developed a modification of SW-506 to make it a rectangle.
  4. Supplementary cementitious material clarification (Section 7010, 2.02, C, 3)
    Identified the combinations of cement types that can be used with fly ash and GGBFS.
  5. Pavement smoothness requirements (Sections 7010, 3.07 and 7020, 3.05)
    Updated pavement smoothness quality control to reflect DOT deleting their specifications section on profilograph and adding inertial profiler.
  6. MIT thickness (Section 7010, 3.07, D)
    Added non-destructive measurement specifications to determine the pavement thickness and thickness index.
  7. Thin lift overlays (Section 7021, 3.01, B)
    Clarified placement and opening temperatures.
  8. Traffic signal conduit (Section 8010, 2.01, B)
    Clarified Schedule 80 PVC meets the heavy wall conduit requirement.
  9. Chain link fence (Section 9060, 1.08, A)
    Developed bid item for residential chain link fence.
  10. Safety rail (Section 9080, 1.08, C)
    Added the concrete for ground mounting of the safety rail to be included with the bid item.


  1. Discussion items
    • Should we develop execution language for minor adjustment of brick manholes?
    • Should we add specific criteria for removal of pipe due to type, width, and length of cracks noted by TV inspection (Section 4060, 3.02) or continue to allow the engineer to make the decision on a case-by-case basis?
    • Add AASHTO R 73 as the standard for pre-installation inspection of RCP?
    • Other?
  2. Iowa Public Works Service Bureau update
    An update on the project will be given. {Click on the link above and register as a member to check out all we have to offer!}
  3. Products and/or research
    District committee members can suggest new products to be proposed for SUDAS manual inclusion; suggestions for potential research projects can also be made at this time.

If you would like to print the whole packet, click here!

(The packet is set up to print double sided, with dividers)

Page revised: March 22, 2023