Civil Engineering Professional Engineer Practice Exam

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Prepare for the Civil Engineering Professional Engineer Test. Use flashcards and multiple-choice questions, complete with hints and detailed explanations. Achieve success on your exam!

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Why is the structural frame attached to the central core in skyscrapers?

To provide aesthetic appeal
To help with climate control
To aid in stability
To support the roof structure

The correct answer is: To aid in stability

The attachment of the structural frame to the central core in skyscrapers is primarily designed to aid in stability. The central core typically houses critical elements such as elevators, stairwells, and mechanical systems, acting as a rigid vertical spine for the building. This configuration enhances the overall structural integrity by distributing lateral loads, such as wind and seismic forces, which are significant for tall structures. With the frame connected to the core, the building can resist twisting and swaying movements. The core serves as a strong, stable reference point, allowing the frame to function effectively in a way that promotes safety and reliability under various load conditions. This connection is essential for maintaining the structural performance of the skyscraper, particularly in urban environments where wind loads can be pronounced and dynamic loads may occur during seismic events. While aesthetic appeal and climate control are important considerations in skyscraper design, they are secondary to the fundamental need for stability provided by the integration of the structural frame with the central core. Supporting the roof structure is also a role of the frame, but the primary purpose of the attachment lies in enhancing the overall stability of the building.