Trinity Place is a 4-tower, mostly-residential development located at the corner of Market and 8th Street in San Francisco. For this prominent downtown project, Malcolm constructed the six-level basements on both Tower 3 and Tower 4. The work on Tower 4 occurred most recently, in 2018, and Malcolm’s scope included installation of the perimeter CSM shoring wall, 461 tiedown anchors, five levels of internal bracing, and a 6500-square foot temporary trestle bridge that served as an easy and necessary staging area for Malcolm’s 250-ton service crane.
At the time of Tower 4’s basement excavation, it was one of the deepest to date in San Francisco, extending 67 feet below grade. With this depth, extensive bracing was required, ultimately using 3.5 million pounds of steel. Within the six basement levels, the three bottom levels will be underground parking and the top three levels have been reserved for a massive, 55,000 square-foot Whole Foods market- the largest one in San Francisco.