← Production research
Representative studio imageImage: forell.com ↗© Forell | Elsesser Engineers, Inc. (as credited at source)
Independent researched provider
Forell/Elsesser Engineers
San Francisco structural engineering firm with documented internal-frame engineering for Anish Kapoor’s Cloud Gate in Chicago.

No BAP partnership is established. Confirm scope, capacity, insurance, schedule and price directly before appointing a provider.
Provider facts
- Base
- San Francisco, CA
- Documented service area
- Not documented
- Relationship
- Researched provider
Documented capabilities
- Structural analysis of sculpture support frames.
- Connection design addressing thermal movement and staged installation, evidenced by Cloud Gate.
Project evidence & roles
- Cloud Gate (The Bean), Chicago
Supported Performance Structures Inc. with structural analysis of the internal frame for staged construction and final installation.
Primary source ↗
To confirm for your project
- Current pricing, insurance, capacity and availability were not verified.
- Project-specific service territory and acceptance were not verified.
- The project evidence concerns the support frame and connections; fabrication and artwork authorship are not attributed to this firm.
Sources & review dates
- forell.com ↗ · Reviewed 2026-10-10
Official homepage identifies the firm’s structural engineering practice and San Francisco contact address.
- forell.com ↗ · Reviewed 2026-10-10
Case study describes support-frame analysis, flexible connections and staged construction for Cloud Gate.