2021 Infrastructure Design Manual Announcement

Houston Public Works (HPW) has completed the 2020-2021 Review Cycle. As a result, the Infrastructure Design Manual (IDM), Ground Water Plant Design Guidelines, General Requirements, Standard Construction Specifications, and Standard Details have been updated.

A 90-day design grace period for implementation of the City of Houston IDM is instituted for the 2021 edition. For Houston Public Works capital improvement projects managed by the Capital Projects service line, Phase II final designs that have not been submitted for a required review prior to October 1, 2021, must comply with all standards in the 2021 IDM.

For projects in the public or private sector, plans submitted for initial review after October 1, 2021, must comply with all standards in the 2021 IDM. The City must receive substantially complete plans before October 1, 2021, to be grandfathered under the 2020 standards.

The Houston Public Works Director signed the IDM Cover Letter & Executive Summary on July 1, 2021. The executive summary provides more background on when the 2021 design requirements and standards will be implemented. It also provides a summary of updates made to all documents during the review cycle. The IDM Redlines, Groundwater Plant Design Guidelines Redlines, Construction Specifications Redlines, and Standard Detail Redlines are also available for additional background.

A public IDM Webinar will be conducted by Microsoft Teams Live Event and held on Thursday, August 19, 2021, from 12 p.m. to 3 p.m. CDT. The IDM webinar will present a high-level view of the changes implemented during the 2020-2021 Review Cycle.

All of the content described here is accessible on the Design and Construction Standards webpage.

For additional questions about the changes, please contact the Office of the City Engineer at 832.394.9164 or [email protected].