Which type of joint requires special considerations due to movement in firestop systems?

The correct response identifies the dynamic joint as requiring special considerations due to its associated movement within firestop systems. Dynamic joints are designed to accommodate movement from various factors, including thermal expansion, contraction, or structural shifts. Because of this movement, the firestop system must be flexible and able to maintain its integrity while allowing for displacement in the joint, ensuring that fire and smoke cannot penetrate through the openings created by this movement.

In contrast, fixed joints do not allow for movement, and therefore, the firestop systems used in these joints are constructed with the expectation that no expansion or contraction will occur. Static joints also do not involve movement but may require different types of materials compared to dynamic joints. Integral joints are typically part of larger structural components that do not have the same considerations for independent movement. This distinction is crucial in firestop application since the materials and systems employed must effectively adapt to the specific behaviors expected at dynamic joints to maintain safety standards in fire protection.