The structure will be outfitted with a variety of NCSs results in these systems and components being subjected to the dynamic environment realized in real earthquakes, while simultaneously interacting amongst themselves and with the building. Accordingly, a task within this project is the performance monitoring and evaluation of the NCSs mounted within and on the building. While the types of NCSs and their details will be largely dictated by consultation with our industry partners, thus far we have obtained firm commitment and desire from our project team ISC specializing in all three broad categories of nonstructural systems (architectural, mechanical and electrical, and building contents). Namely, our ISC will be outfitting the structure with and monitoring the performance of: (i) glazing (including laminated glass), (ii) cladding, (iii) an elevator, (iv) fire dampers, (v) access floors, (vi) ceiling subsystems, (vii) HVAC components and subassemblies, (viii) fire sprinkler and riser system, (ix) fire detection, alarm and communications systems, and (x) smoke and fire barriers. Note that during our two pre-proposal workshops held at UCSD, we had significant interest by a number of other companies in all three broad NCS categories, and therefore we are quite confident that additional systems will be installed in the building. A number of these NCSs are traditionally anchored to the structural floor or walls, and common details and products used for anchorage will be provided by industry partner Hilti. Using the exact anchorage conditions expected in the field allows us to not only replicate the real boundary conditions, but also measure anchor forces and deformations of the anchors themselves during dynamic shaking. Alternatively, some NCSs will be isolated or otherwise protected from seismic movement. Plans for protecting NCSs are described in Protective Systems.

The systems proposed thus far span from drift to acceleration sensitive; mounted on the exterior (exoskeleton) of the building, to within the building; attached and unattached; and each vary in their basic detailing (geometry, flexibility, mass, and dynamic properties). The same NCS may be installed at different floor levels; for example, one installed using modern code-based design, while another installed absent seismic code detailing guidance. We will consult with our industry partners regarding the final selection of the NCS installation details. Some systems will be interacting with the structure, while others not; and some systems (such as the HVAC subsystem) will have interaction amongst its various components. In addition, there will be numerous unanchored contents that are representative of those typically found in a building of this type. Contents with relatively low coefficients of friction, such as those on wheels, appear to be most sensitive to total absolute floor displacements, rather than accelerations. The floors of the building will be designed thematically, and thus accommodate a variety of types of NCSs (Fig. 1). For example, as shown in Fig. 1 (left), the fourth level will be outfitted as an intensive care unit (ICU), and the fifth level will be outfitted as a surgery suite. The elevator will be installed as per typical field installation, and run from the ground level to the uppermost floor of the structure. Also prefrabicated steel stairs will be installed at open stairwell. Fire-rated and smoke-rated barriers will enclose select areas at the third level.

Fig. 1 Conceptual Plan Layout at Lower Floors and Upper Floors

Our task of nonstructural systems and components research will mainly focus on:

• Full-scale building test, with several nonstructural subsystems interacting between themselves and with the building
• Results will impact fire protection and nonstructural seismic requirement is future codes
• Integrity tests and controlled fire test on the structure to assess passive fire protection systems after EQ (pending)