Thin-Shell Concrete

Holy Trinity High School Gym
N. Animas St. & Church St., Trinidad, Colorado
37-10-07 N, 104-30-31 W

Structural Engineer: unknown

Architect: Toll and Milan

Builder: Platt Rogers Construction Co. of Colorado Springs

Configuration: Folded plate arch

Measurements: Shell spans 115 feet and is 3.25 inches thick

Purpose: School

Year: 1958

This roof was assembled from precast elements, each 30 feet by 10 feet.

The author visited in May 2017.

References

Denver Public Library, Western History Collection. "Toll and Milan Architectural Records, WH1574." Accessed January 9, 2023. https://archives.denverlibrary.org/repositories/3/resources/3145/collection_organization#tree::archival_object1063787.

Mast, Paul E. "Construction of Precast Shells and Folded Plates," in Concrete Thin Shells (ACI SP-28) eds. S. J. Medwadowski, W.C. Schnobrich, and A. C. Scordelis. Detroit: American Concrete Institute, 1971: 113-37.

"New Holy Trinity Gym To Be Initiated Friday." Trinidad Trojan Tribune, February 28, 1958.

"Trinidad High School Contract is Awarded." Daily Sentinel (Grand Junction), January 29, 1957.

Updated January 10, 2023