What is the required Water capacity for standby purposes on Home Sprinkler system should Municipal Supply fail to to breakage in supply. 30 min, 60 min. Tank capacity in liters.
None, unless the AHJ requires above NFPA 13D
NFPA 13 D for automatic and tank
6.1.1 Every automatic sprinkler system shall have at least one automatic water supply.
6.1.2 Where stored water is used as the sole source of supply, the minimum quantity shall equal the water demand rate times 10 minutes unless permitted otherwise by 6.1.3.
6.1.3 Where stored water is used as the sole source of supply, the minimum quantity shall be permitted to equal the two sprinkler water demand rate times 7 minutes where dwelling units meet the following criteria:
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