I cannot find a reason to not add a flow switch in this situation:
Existing mercantile single story type II construction. Appears to be built late 60's early 70's. More than 50% is being Renovated. Existing, complete sprinkler system. It had a water motor gong and line voltage bell tripped off the retard chamber via pressure switch. Both have been disabled. Shotgun riser, yard PIV is the only shut off. AHJ requies a fire alarm for renovation. Sprinkler company submits and gets approval to raise 25% of the heads to make the ceiling height uniform, nothing else. No flows or tampers. AHJ has very specific sprinker requirements, those were adopted in 2001. They do not separate new/existing work, flows etc are required to be connected to a FA.
I point out this is a problem. Customer's construction team said, submit drawings with required alarm components, no sprinkler. Strenuous objections are documented. I submit those plans, with a call out showing the riser room, indicating no existing or planned connection.
We get the to ahead on those plans....the AHJ is not illiterate, quite savvy actually. Other small items were required in their 'approval' letter. They do not stamp plans approved, they only approve completed installations. We are used to this and know exact what they want here, it's not unreasonable.
No final inspections have been made, 2 cursory walk throughs had been made by the AHJ's office. Nothing has been said yet.
We're operating on the premise this is going to cause some heartache when we get inspected. I'm not concerned for me, we're not going to hide anything.
Taking into account IBC NFPA 1 and life safety code 2009 editions are adopted and te FA is required, how can you not require an interconnection?
Existing mercantile single story type II construction. Appears to be built late 60's early 70's. More than 50% is being Renovated. Existing, complete sprinkler system. It had a water motor gong and line voltage bell tripped off the retard chamber via pressure switch. Both have been disabled. Shotgun riser, yard PIV is the only shut off. AHJ requies a fire alarm for renovation. Sprinkler company submits and gets approval to raise 25% of the heads to make the ceiling height uniform, nothing else. No flows or tampers. AHJ has very specific sprinker requirements, those were adopted in 2001. They do not separate new/existing work, flows etc are required to be connected to a FA.
I point out this is a problem. Customer's construction team said, submit drawings with required alarm components, no sprinkler. Strenuous objections are documented. I submit those plans, with a call out showing the riser room, indicating no existing or planned connection.
We get the to ahead on those plans....the AHJ is not illiterate, quite savvy actually. Other small items were required in their 'approval' letter. They do not stamp plans approved, they only approve completed installations. We are used to this and know exact what they want here, it's not unreasonable.
No final inspections have been made, 2 cursory walk throughs had been made by the AHJ's office. Nothing has been said yet.
We're operating on the premise this is going to cause some heartache when we get inspected. I'm not concerned for me, we're not going to hide anything.
Taking into account IBC NFPA 1 and life safety code 2009 editions are adopted and te FA is required, how can you not require an interconnection?
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