QUESTION
In which situations can the water supply tank be "open sky"?
ANSWER
In the attached slides, the following are indicated:
- what are the water supplies provided by UNI EN 12845
- what are the SINGLE UPPER WATER SUPPLIES, provided by UNI EN 12845
- what are the characteristics of the water supply tanks in the case of SINGLE UPPER WATER SUPPLIES
From what is shown in the slides, it is clear that an "open sky" water supply:
In fact, for a upper type of water supply, it is required that there is no penetration of light or material from the outside into the water supply tank.
This result can only be achieved if the water supply tank is of the CLOSED type.