2020 Standard and Supplemental Specifications
The 2020 Standard and Supplemental Specifications are only available in the following electronic format. Hard copies are not available.
Spec Book V3.0 - effective April 28, 2022
Spec Book V2.3 - effective September 9, 2021
Spec Book V2.2 - effective July 15, 2021
Spec Book V2.1 - effective April 29, 2021
Spec Book V2.0 - effective February 11, 2021
Spec Book V1.3 - effective December 17, 2020
Spec Book V1.2 - effective July 16, 2020
Spec Book V1.1 - effective April 23, 2020
Spec Book V1.0 - effective January 23, 2020
Spec Book V3.1 - October 2022
2022 Redline - (Information Only)
2021 Redline - (Information Only)
2020 Redline - (Information Only)
Final Specification Revisions - 2022 - (Information Only)
Final Specification Revisions - 2021 - (Information Only)
Final Specification Revisions - 2020 - (Information Only)
Comment period on draft specs closes on the last day of the month.
Specification Revision Process
Please send comments and proposed specification changes to: MDT Specifications.
Combined Gradation Example
Please email Joe Green for prior versions of MDT Specifications.