Completed 100-inch telescope foundation pier with construction of building framework surrounding it, as seen from the northwest, Mount Wilson Observatory. The concrete brackets are clearly visible. Steel framing surrounds the concrete pier. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Foundations--Design and Construction Concrete construction Brackets Steel framing (Building) Steel, Structural Mount Wilson Observatory Photographic prints. (gmgpc)
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