Good morning all.
So I'm looking at an Extra Hazard Group 1 (EH1) dry system under NFPA 13 (2016 edition).
I want to apply multiple adjustments per 22.214.171.124.7 because I want to use high temperature sprinklers to get me a 25% reduction under 126.96.36.199.6.
This can result in the following math: 2,500 * 1.3 for dry system = 3,250 sqft. 3,250 * 0.75 (for 25% reduction) = 2,437.5 sqft.
And this always stays above the 2,000 sqft requirement of 188.8.131.52.6 and everyone is happy.
But it can also result in the following math happening: 2,500 * 0.75 = 1,875 sqft. 1,875 gets forced into 2,000 sqft because I'm not ever supposed to go below a 2,000 sqft design area under 184.108.40.206.6. So then 2,000 * 1.3 (for dry system) = 2,600 sqft.
So would the system have a 2,437.5 sqft design area or a 2,600 sqft design area?
Yeah, it's only two sprinklers, but at these densities that can change a system. I can see an argument for either conclusion. Thanks in advance.
Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
Subscribe and learn something new each day:
Top October '23 Contributors
Get 100 Days of Free Sample Questions right to you!
PE PREP SERIES