Final answer:
Compressed flammable gas containers should be placed at least 20 feet above the ground for safety reasons.
Step-by-step explanation:
When it comes to storing compressed flammable gas containers, it is important to prioritize safety. These containers should be placed at least 20 feet above the ground.
The reason for this is to ensure that in the event of a fire or other accident, the containers are a safe distance away from potential ignition sources and are less likely to cause harm or further exacerbate the situation.
By keeping the containers at a sufficient height, the risk of damage to the containers and potential release of hazardous gases is minimized.