STRUCTURES

ESPN X-Games Ice Climbing Tower
Location: Big Bear, California; Crested Butte, Colorado

When ESPN wanted to bring ice climbing into the realm of televised spectator sports, they chose a team consisting of veteran ice climber Jeff Lowe, climbing wall leader EntrePrises and C+D Engineering to design and build a climbing tower within 6 months. The 75 feet tall tower, the first of its kind, consists of a structural steel tripod supporting two 45 ton ice walls from steel cables and wire mesh. The ice walls may be formed in weeks even in warmer climates with the aid of liquid nitrogen and a retractable insulating blanket facade. Originally designed for the earthquake region of Big Bear, California, the fully bolted tower was later moved to Crested Butte, Colorado, where it continues to showcase ice climbing for ESPN's Winter X Games.

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The Hotchkiss School Shell Concrete Climbing Structures
Location: Lakeville, Connecticut

EntrePrises and C+D teamed together to create the first outdoor freestanding shell concrete climbing sculptures in the United States. Foam scale models of the sculptures were laser scanned to digitally define the three dimensional geometry. Using finite element analysis C+D designed the reinforced concrete sculptures to withstand falling climber, wind and snow loads. With the New England winter closing in, construction success was ensured by working closely with the shotcrete supplier, application contractor, and testing engineers to establish safe and timely shotcrete lift sequences for the freestanding sculptures.



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Fletcher Benton Sculpture

Structural Engineering was included in the fabrication of this thirty feet high out door sculpture in Phoenix Arizona for wind loads. Sculpture geometric shape metal thickness and weld specifications insures that public safety goes along with public art.

 

 

 

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Francine Lloyd Sculpture

Three fifteen feet tall painted steel fin plates jump out of this water pool in San Mateo. Structural engineers collaborated with the artist to provide the foundation, anchors and weld details to translate the 1⁄4 inch scale model to a finished public art.

 

 

 

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Calvay Lutheran Church Bell Tower

Information forthcoming.

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Moscone Center Trusses
Location: San Francisco, California

Information forthcoming.





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Marina Lagoon North Structure Improvements
Location: San Mateo, California

The City of San Mateo decided to upgrade the old pump station separating Seal Slough, on the bay, from Marina Lagoon, a residential water way. The intent was to create a recreational use for the early nineteen fifties structure that would allow fishing in Seal Slough. The City hired C+D to study the structural adequacy of the old concrete pump station, make recommendations for repairs and rehabilitation, and develop construction documents for turning it into a fishing platform. The modifications also included new design criteria of a tsunami, or earthquake generated wave, against the full height of the structure. The seismic design approach used by C+D was the subject of a paper presented at the 1996 SEAONC Convention in Hawaii on Performance Based Seismic Design.

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