If an alteration adds exactly 20 sprinklers, are updated plans required?

• A. No, Updated Plans Are Not Required
• B. Yes, Updated Plans Are Required
• C. Only If The Alteration Includes Piping Changes
• D. Only If The Alteration Affects The Alarm Configuration

Answer: (A)

Understanding when updated plans are needed comes down to a threshold for alterations to a fire sprinkler system. In Texas rules, adding up to 20 sprinklers is treated as a minor modification that does not require resubmitting updated plans. The intent is to avoid unnecessary plan revisions for small changes, as long as the alteration stays within that count and doesn’t change the system’s overall layout or function beyond the original design. If the alteration adds more than 20 sprinklers, updated plans would be required. Changes to piping layout or alarm configuration that would affect the system’s operation would also trigger plan updates if they go beyond what was originally approved, but adding exactly 20 sprinklers does not cross that threshold.