Residential foyers: Sprinklers permitted in residential foyers.

• A. No
• B. Only in hotels
• C. Yes
• D. Only in basements

Answer: (C)

The idea being tested is that in low-rise residential systems, sprinkler protection is allowed in spaces like entry foyers, not restricted to other types of buildings or just basements. In NFPA 13R designs for residences, foyers are treated as part of the dwelling unit where automatic sprinklers can be installed to help control a fire early and facilitate safer egress. Allowing sprinklers in foyers aligns with the goal of providing life safety in living areas without adding unnecessary restrictions on where head coverage is permitted.

So, sprinklers in residential foyers are permitted because these spaces are part of the dwelling and benefit from early fire control, unlike the other choices which either imply a restriction to hotels, or to basements, or suggest prohibition.