This paper presents several unique design features and various analytical approaches used for a specific curtain wall proposed for a federal building that was required to withstand potential external high explosive threats. The building is a large reinforced concrete frame building with precast concrete wall panels and a glass curtain wall. The curtain wall consists of glass units supported by mullions that are attached to pretensioned steel cables spanning from the foundation to the roof. The glazing is designed using a single-degree-of-freedom (SDOF) approach using GSA's WINGARD code, which is compared to results obtained using BakerRisk's proprietary SDOF glazing analysis program. The cables are analyzed as tension membrane components using the SDOF methodology. A three-dimensional finite element analysis (FEA) model of the windows and cables has also been developed using both the commercially-available ADINA and LS-DYNA FEA codes. The SDOF results are compared to the FEA model results.
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