Final answer:
Fire-resistive construction refers to buildings where materials like reinforced concrete or protected steel give walls, floors, and ceilings a high fire-resistance rating, typically to withstand fires for three to four hours, commonly used in high-rise buildings.
Step-by-step explanation:
The construction type where walls, floors, and ceilings must be able to resist fire for three to four hours is known as fire-resistive construction. Buildings with these specifications are usually constructed with materials like reinforced concrete or protected steel, which have high fire-resistance ratings.
These materials and the design of such buildings aim to contain fires within a compartment, prevent the spread of fire and collapse, and give occupants more time to evacuate as well as giving emergency services a longer period for firefighting operations. Examples include high-rise office buildings and skyscrapers that require stringent fire safety measures to protect the large number of occupants and the structural integrity of the building.