Re: Ansul hood in the common house kitchen
From: Bryan Bowen (
Date: Tue, 1 Jun 2021 12:57:31 -0700 (PDT)
I'm afraid what I could find was this, from our (then) chief building
official: "After studying the type of use established for this particular
kitchen, and utilizing the 2006 IMC commentary, it was determined to be
unnecessary." We generally explain that we're just cooking for ourselves,
no wholesale or retail use. Use is one aspect, the other is the type of
cooking and equipment used.

One path is to have a local code expert (we use Colorado Code Consulting)
write a letter explaining this interpretation citing the code and
commentary. Or, your architect of record (who is awesome), or your
mechanical engineer.

Still, many jurisdictions are little fiefdoms and so much of it can really
come down to one person's predilections and whether you can find a way to
convince them.

The battle rages!

- b


*caddis collaborative*
1510 Zamia Ave #103
Boulder, CO 80304
303 443 3629

On Tue, Jun 1, 2021 at 1:42 PM Katie Henry <katie-henry [at]> wrote:

>  A little more detail ... We were told by our consulting engineers that
> the "inspector" (fire marshal?) will probably require the Ansul hood.
> According to the engineers, our options are to (1) install the Ansul hood
> now or (2) install a regular hood and hope the inspector passes it, but if
> not and we are required to replace it with an Ansul hood, it will cost much
> more than if we'd installed it in the first place.
> Evidently it's not an option to reach out to the fire marshal to discuss,
> but maybe that's the way consulting engineers think.
> Katie
> | Re: Ansul hood in the common house kitchen |    |
> | From: Bryan Bowen ( |
> | Date: Tue, 1 Jun 2021 12:17:26 -0700 (PDT) |
> Generally it boils down to the mechanical code plans examiner or the fire
> marshal. I think I have a copy of an interpretation from our local building
> official justifying the use of a regular (non fire suppression hood) in our
> co-ops and cohousing projects here in Boulder. I'll try to dig that up.
> There was a code change several years ago that made this a more likely
> interpretation.
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