Guides are used near _____.

Guides are primarily utilized near expansion joints because they play a crucial role in managing the movement within a piping system. Expansion joints are designed to absorb thermal expansion or contraction, which can cause significant movement in the piping. Without guides positioned near these joints, the piping could potentially move in unintended and uncontrolled directions, leading to misalignment, excessive stress on joints, or even failure of the system.

Guides create a controlled path for the pipe, ensuring that it can expand or contract while maintaining its intended alignment. This helps in directing the movement and stabilizing the piping system, especially in environments where temperature fluctuations are common. The presence of guides is essential for preventing undue forces on equipment and connections that can arise from thermal movement.

In contrast, while anchors, rolling hangers, and snubbers serve important roles in supporting and stabilizing piping systems, they do not specifically provide the directional control and support required for the movement associated with expansion joints.