Which of the following statements about smoke barriers in new health care occupancies is true?

The requirement for smoke barrier wall ratings in new health care occupancies is based on the need to control smoke movement during a fire, which can be critical in protecting life and property. Smoke barriers are designed to restrict the passage of smoke and limit its spread, contributing to the overall life safety strategy within health care facilities.

In the context of the options presented, a smoke barrier wall rating of at least 1 hour is mandated to effectively provide this level of smoke containment. This duration allows enough time for occupants to evacuate safely and for first responders to manage the incident. The 1-hour rating is also aligned with the standards set forth in applicable NFPA codes, ensuring that the integrity of the barrier withstands the conditions of a fire for a substantial period.

This makes the assertion about the 1-hour requirement for smoke barrier wall ratings accurate, as it reflects the fire safety engineering principles intended to safeguard patients, staff, and visitors in health care settings. Adequate smoke barriers are essential in limiting smoke's potentially harmful effects, which is particularly critical in environments that may have vulnerable populations, such as those in medical facilities.