About the author  ⁄ Steve Ratchye, P.E., S.E., LEED AP

Steve Ratchye, P.E., S.E., R.A., LEED AP BD+C, is a Vice President in Thornton Tomasetti’s San Francisco office and serves on ACI’s Committee 232 on Fly Ash in Concrete. Steve may be reached at SBRatchye@ThorntonTomasetti.com.

Decades in conception and planning, the new Sanctuary for Sufism Reoriented in Walnut Creek, California, aims for a design life of centuries. The Sanctuary consists of a series of one-story domes above grade and a basement below (Figure 1). The largest dome is 78 feet in diameter and covers the column-free Prayer Hall, and smaller domes cover a variety of other spaces around the perimeter. A striking 38-foot tall base-isolated bronze sculpture reaches up from the basement to the oculus of one of the medium domes.

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