Maybe Mark- I've never been any good at math myself.
Thanks,
Brad
Quoting "Mark.Phelps" <[email protected]>:

One could state based on the complex math that is has a 100% safety factor. IMHO
Mark at Aero

Mark at Aero
602 820-7894

Sent from my iPhone

On Jun 26, 2018, at 5:51 PM, "[email protected]" <[email protected]> wrote:

I'm the same way Nick, and Bruce, I'll have to chew on this a while - like you posted a few years ago, "When the student is ready, the guru will appear".
I love the last line of this article. I think it's where we're at!
At the time, the UK and Australia was saying 0.05 was fine for schools, churches, etc. They called it 'extra light hazard'. 13 TC member suggests that should be doubled, so they did, and called it Light Hazard :). Anyway, that last line says it far better than my tortured articulation on the recent Safety Margin thread when I said, "Until we have numbers for Low, Moderate, and High, we don't know squat about Safety re supply/demand". This is because if we calc .1, and it's 'right on the curve', we've already got 50% right out of the gate!
Thanks guys,

Brad


Quoting Bruce Verhei <[email protected]>:

If you went with it, watched commodity creep, watched out for encapsulation, keep design aisles clear, and later pallet-type creep, and an eagle eye cracked for the sin of idle pallets, it worked. Forklifts caught fire, all employees were able to exit the building without excessive risk, and businesses were shipping the next shift, depending on sensitivity of product to smoke.

Best.

Bruce

On Jun 26, 2018, at 11:48, Nick Maneen <[email protected]> wrote:

James Golinveaux with Viking did a great class on this last fall at AFSA in Las Vegas.

I like knowing how the sausage is made, even the parts that make you cringe.

Nick Maneen, SET
c 704.791.7789

From: Sprinklerforum [mailto:[email protected]] On Behalf Of Brad Casterline
Sent: Tuesday, June 26, 2018 2:01 PM
To: [email protected]
Subject: Origin of design density curves

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.sfpe.org_page_2012-5FQ2-5F3-3F&d=DwICAg&c=wn3mZQLIuInh2ClcJ0_DIA&r=dLwiR71i_XhSFqam3ZLeaFLiQJ3cDTUB0ReB4-yDDcg&m=pzDVHh7V-6i-uvHfp3zDEwe-nAjQTpIxhFBLS2yEgUk&s=8CnQ3odRibIvlN3EiEDAlXNRdKrTsSltjY3lnpyCifo&e=

I just wanted to share this.
I hope the link works.

Thanks,

Brad



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