Folsom Cordova Unified School District Education Services Center

This project utilizes an innovative design solution to construct Tilt-Up concrete over the 40-foot code height limit in high seismic zones. To meet the demands of the architect and the developer for the Business Park, Special Reinforced Concrete Moment Frames were chosen to function as both the exterior skin as well as the Lateral Force Resisting System. The architectural spandrel beams are 5 feet deep, but structurally the beam depths needed to be 3 feet deep to meet strong-column/weak-beam criteria; thick slots at the beam/ column joints provided this. Joints were architecturally masked with horizontal reveals. Panel rebar fabrication was primarily performed in the rebar fabricator's shop and sent as units for final site assembly. Architectural infill panels were incorporated within the typical Concrete Moment Frames to fulfill the desired fenestration for the exterior face of the building. The connections were designed for out-of-plane resistance while the use of rocking bearings allowed for maximum in-plane drifts.

Common to Tilt-Up construction, panel cracking due to shrinkage and thermal cycling had to be limited. Elevated slab dowels at the floors were wrapped in foam while seismic forces were transferred through dowels at the interiors of the frame. This alleviated restraint from shrinkage, allowed frame joint rotation and provided out-of-plane panel anchorage without restricting panel shrinkage / thermal displacement. This was also accommodated at the chord/drag strut splice via elastic lengthening of tie plates on the MC ledgers.

 
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Project Location

Rancho Cordova, CA 95742
United States

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Project Specifics

Project Category:
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Number of Floors:
0
Number of Panels:
17 panels
Total Floor Area:
73,700 sq ft (6,847 sq m)
Project Footprint:
188,600 sq ft (17,521 sq m)
Tallest Panel:
52 ft 0 in (15.85 m)
Widest Panel:
30 ft 0 in (9.14 m)