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Harbor Steps Building

Harbor Steps Building

View of downtown Seattle from Harbor Steps apartment building.
Seattle, Washington, United States
Completed in 2000, Harbor Steps is an 18-story residential building in downtown Seattle.
Owner: Harbor Properties
Consultant: Walker Consultants

Completed in 2000, Harbor Steps is an 18-story residential building in downtown Seattle.

The Problem

The salt-laden air from nearby Puget Sound created an environment around the building where the steel in the post-tensioned anchorages and some unprotected ends of the post-tensioned cable began to corrode. If this corrosion was not addressed the cables would deteriorate leading to a shorting of the structures service life.

Our Solution

The use of Galvashield® CC135 Type 2 anodes was selected as the best corrosion protection method for this project as they provided a flexible and localized method to provide galvanic protection. The Glavashield CC135 anodes were drilled in exposed floor areas around the perimeter and attached to the post-tensioning anchorages.

The Result

The small diameter of the CC135 allowed for installation in the tight spacing between the anchorages. These anodes will provide long-term corrosion mitigation for the anchorages and the sections of exposed cable immediately behind each anchorage.

Technology Used

These innovative products and technologies were used on this project.