Ben Hirst Fire Officer 1 Practice Exam 2026 – The All-In-One Guide to Master Your Fire Officer Certification!

Classification of building construction by fire resistance identifies ordinary construction as Type III, which uses exterior walls made of masonry or other noncombustible materials while interior framing can be wood. This exterior masonry envelope provides fire resistance for the building’s shell, distinguishing ordinary construction from the other types. Type I is fire-resistive throughout, Type II is noncombustible throughout, and Type IV uses heavy timber for structural members. So the defining feature that fits ordinary construction is the masonry exterior walls.