Final answer:
No, tubular welded frame scaffold frames must not be installed without feet or jacks, as these components are essential for stability and safety.
Step-by-step explanation:
The correct answer is option No. Tubular welded frame scaffold frames should not be installed without feet or jacks. These elements are critical for ensuring stability and safety. Feet, also known as base plates, help distribute the load of the scaffold over a larger area, reducing the pressure on the underlying surface. Jacks, or screw jacks, are used to level the scaffold on uneven ground and can provide fine adjustments in height to ensure that the work platform is level. Omitting these components can lead to unstable scaffolding structures and increase the risk of collapse or accidents, which is against safety regulations.
Feet or jacks are important components in scaffold frames as they provide stability and support. Without them, the scaffold may not be safe to use and can be at risk of collapsing or tipping over.
It is crucial to follow the manufacturer's instructions and industry guidelines when installing scaffold frames to ensure proper safety measures are in place.