Which type of door is commonly found in upscale buildings in large cities and should be avoided for forcible entry whenever possible?

A revolving door is commonly found in upscale buildings in large cities due to its aesthetic appeal and ability to improve energy efficiency by reducing air exchange between the inside and outside. When it comes to forcible entry, such doors present unique challenges. They are designed to create a continuous barrier and often have mechanisms that can complicate forcible entry efforts.

Using force on a revolving door can cause damage to both the door and the frame, making it less desirable for firefighters needing to enter a building quickly. In addition, successful entry may require specialized techniques or tools that are not typically used in emergency situations, which can lead to delays in response. Therefore, it is advisable to avoid forcible entry through revolving doors unless there are no other options, as this can hinder the overall effectiveness and efficiency of emergency operations.

Other types of doors, like wooden, glass, or fire doors, can also present challenges, but they are generally more straightforward to breach for emergency entry compared to revolving doors.