Which of the following practices is NOT a method of stabilization for mobile scaffolds?

Installing guardrails is primarily a safety feature designed to prevent falls and ensure the safety of personnel working at height. Guardrails are essential components of scaffolding systems to protect workers, but they do not contribute to the stabilization of mobile scaffolds. Stabilization methods are focused on ensuring the structure remains secure and upright while in use.

In contrast, outrigger bases and adjustable legs are directly involved in enhancing the stability of mobile scaffolds. Outriggers increase the base width, thereby providing additional support and reducing the risk of tipping. Adjustable legs allow for precise leveling on uneven surfaces, contributing to the overall stability of the scaffold.

Using contact locks is another stabilization method that helps secure the scaffold in place. These locks prevent accidental movement during use, adding to the safety and stability of the mobile structure. Thus, installing guardrails, although essential for safety, does not stabilize the mobile scaffold itself.