Concrete Products

JAN 2019

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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42 • January 2019 www.concreteproducts.com NEWS SCOPE PRACTICE The Millennium Tower Homeowners Association has outlined a plan for the building at 301 Mission Street, San Francisco, to halt settle- ment and reverse its tilt by installing new foundation piles tying the structure to bedrock. Mission Street Development LLC, the original developer, has agreed to perform and warrant work for the retrofit, which is anticipated to be paid for by a settlement pursuant to an ongoing, confidential mediation. In a permit application filed with the city and county of San Francisco, the Millennium Tower Association (MTA) outlined the "Perimeter Pile Upgrade" plan to install 52 concrete piles that will transfer a portion of the building's weight from its existing foundation to bedrock about 250 feet below. That shift will relieve stress on soils that have compressed beneath the building, causing it to settle more than anticipated and to tilt. Engineers who designed the upgrade plan said the new piles along the building's north and west sides will limit future settlement of the tower to minimal levels and reverse the tilt. "We have high confidence in the engineers who designed this retrofit and we look forward to working with the city and county of San Francisco to get the project underway," says MTA Center Board of Directors President Howard Dickstein. "While the city and other experts have always certified the building as safe, this solution will eliminate any lingering ques- tions about its stability and ensure future settlement is within the normal range." Mission Street Development has been working with the MTA for months to reach agreement on an appropriate plan to address greater than anticipated settlement as well as tilting associated with Condominium association, engineers dig deep to reverse tower tilt San Francisco code authorities are reviewing the Perimeter Pile Up- grade engineering proposal. If approved as presented, the project is expected to take about 18 months. GRAPHIC: Millennium Tower Homeowners Association "We save thousands with Solimar aerators." – Jerry Hayes, Ingram Ready-Mix Save on material costs and load faster with Solimar aerators. Cement flows freely when fluidized with our system that is easy to retrofit to existing silos, bins or hoppers. Weigh-ups go faster when constituent materials are fluidized with Solimar aerators. Solimar Booth Number | N262 Material Aeration Wall Vibration Compressed Air DISTRIBUTORS WANTED Bring the Solimar cost-savings to your customers.

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