What is a primary concern regarding fire-resistive construction joints?

The primary concern regarding fire-resistive construction joints is that they may move and weaken fire containment. Fire-resistive construction joints are designed to maintain the integrity of a building’s fire protection system. When these joints are not secure, or if they allow for movement due to structural shifts or thermal expansion, the protective barrier can be compromised. This can lead to gaps that enable the spread of fire and smoke, thereby increasing the risk for occupants and potentially compromising the building's safety measures.

While other factors such as planning oversight, cost, and inspection frequency are relevant in the context of fire-resistive construction joints, the immediate risk to safety from potential movement and compromised containment is the most critical concern. It’s essential for architects and engineers to ensure that these joints are properly detailed and installed to maintain their protective roles during a fire event.