Supplemental Specifications

General Supplemental Specifications

The following items have been approved by the SUDAS Board of Directors and are available for use. These items will be included in the 2023 Edition of the SUDAS Standard Specifications in December. Click on the topic title for the marked up version of the revision; click on the section reference for a clean version of the section that incorporates the change.

Errata and format revisions
Minor errors and formatting revisions.

Clearing and grubbing (Section 2010, 1.08, C and 3.01, D)
Added “includes” information to lump sum bid item and corrected reference to open burning requirements.

Separation of water mains from sewer mains (Sections 4010, 3.12; 4020, 3.08; and 5010, 3.06)
Updated water and sewer separation language based on new Iowa DNR rules.

Composite castings (Section 6010, 2.10, C)
Added composite castings as an alternative product.

Precast top (Figures 6010.301, 303, and 305)
Added a new note to allow for eccentric flat top in lieu of eccentric cone section.

Cement alternatives (Section 7010, 2.01, A)
Added Type 1T cement as an option for Type I/II cements; 1T is a ternary blend with slag/limestone or pozzolan/limestone.

Admixtures (Section 7010, 2.01, G)
Added I.M. 403 reference for approved sources for admixtures including new CarbonCure.

Railroad crossing approaches (Figures 7010.903 and 7020.902)
Deleted the 1 inch fiber board and changed terminology from HMA to asphalt.

Curing compound (Section 7011, 1.08, A, 7; 2.01, M; and 3.02, E, 3)
Added liquid curing compound as an option for a bond breaker for PCC overlay of concrete.


City Supplemental Specifications

Some cities revise the SUDAS Specifications, creating a city supplemental specifications document. We are collecting a list of city supplemental specifications, which can be found here.


Page revised: June 21, 2022