Engineering Details & Specifications

The Engineering Details & Specifications document is published by the Engineering Division of the city’s Public Works Department. This document specifies the minimum criteria for construction, maintenance and alterations outside of building structures on both public and privately controlled property and is intended to assist but not substitute competent work by design professionals and contractors.


The Engineering Division periodically updates the details and specifications provided on this page. The most recent major document update was July 2021 with the previous 2016 version also available (formerly titled “Engineering Standards”). The document is freely available in PDF format viewable to various PDF viewer software programs, through the link below. If you would like a print version, please contact the City Engineer (jbirchman@mltwa.gov; 425-744-6275).

2021 Engineering Details & Specifications

Previous Versions

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