Type 1 hood

[jtom]

Can a small shelf made out of plywood covered with formica be installed under a Type 1 hood?It will not be directly over a heat source.Any code reference would be appreciated.

 

[north star]

= ( ) =

From the `12 IBC, ...refer to SECTION 2604 - INTERIOR FINISH AND TRIM:

2604.1 - General:

"Plastic materials installed as interior finish or trim shall comply with Chapter 8.

Foam plastics shall only be installed as interior finish where approved in accordance

with the special provisions of Section 2603.10..........Foam plastics that are used as

interior finish shall also meet the flame-spread index requirements for interior

finish in accordance with Chapter 8..............Foam plastics installed as interior

trim shall comply with Section 2604.2."

= ( ) =

 

[cda]

New or existing hood??

Either way need to check with the fire extinguishing company if it will obstruct the spray of the extinguishing system

Also might be a health code thing as far as cleaning issue

 

[jtom]

New hood .no obstructions

 

[Moscow]

2009 IMC section 507.9 A type 1 hood shall be installed with a clearance to combustible of not less than 18 inches. there is an exception in regards to gypsum but it still has to be constructed with noncombustible structure. I don't have a 2012 but I am sure it has the same section.

 

[cda]

2009 IMC section 507.9 A type 1 hood shall be installed with a clearance to combustible of not less than 18 inches. there is an exception in regards to gypsum but it still has to be constructed with noncombustible structure. I don't have a 2012 but I am sure it has the same section.

but that is the hood itself, and not what is under the hood

 

[cda]

10.2.7.3 The addition of obstructions to spray patterns from the cooking appliance nozzle(s) such as baffle plates , shelves, or any modification shall not be permitted.

The distribution pattern for appliance nozzles is tested and listed only under specific conditions and does not include testing with objects that will obstruct the application of the extinguishing agent onto the cooking appliance.

BUT if the extinguishing company says no problem than I would allow a shelf

 

[fireguy]

10.2.7.3 The addition of obstructions to spray patterns from the cooking appliance nozzle(s) such as baffle plates , shelves, or any modification shall not be permitted.The distribution pattern for appliance nozzles is tested and listed only under specific conditions and does not include testing with objects that will obstruct the application of the extinguishing agent onto the cooking appliance.

BUT if the extinguishing company says no problem than I would allow a shelf

I would also ask for copies of the installation manual, showing height and depth of the shelf and nozzles that meet those criteria. The Ansul installaltion manual allows 2 nozzles, one protecting a shelf height of 18" and another protecting a shelf height of 20".

The suppression system protects against grease fires, not wood, paper or plastic fueled fires.

 

[Moscow]

but that is the hood itself, and not what is under the hood

Yes, I agree that is talking about the hood and surrounding area of the hood. Don't you think if the code is requiring that the hood to have 18" of noncombustible material on all sides of the hood and the wall behind the hood to be noncombustible, that maybe you should require noncombustible under the hood as well? To me it would be more important to have the noncombustible under the hood were the heat source is.

 

[cda]

Yes, I agree that is talking about the hood and surrounding area of the hood. Don't you think if the code is requiring that the hood to have 18" of noncombustible material on all sides of the hood and the wall behind the hood to be noncombustible, that maybe you should require noncombustible under the hood as well? To me it would be more important to have the noncombustible under the hood were the heat source is.

Nope.....

But combustibles are not normally found under the hood

Depending on the appliance the shelf is above, I might or might not say something

 

[Builder Bob]

I doubt teh hood system was tested by the listing agency with that "combustible shelf" at time of testing. Not allowed nor approved.

 

[cda]

I doubt teh hood system was tested by the listing agency with that "combustible shelf" at time of testing. Not allowed nor approved.

And the rubber wheels on the appliances??

If the hood can't handle a wood shelf ,, not sure how it handles a charcoal/ wood grill

 

[Frank]

Nope.....But combustibles are not normally found under the hood

Depending on the appliance the shelf is above, I might or might not say something

If there were no combustibles there would not be any need for a hood--frying oil, grease drippings, fuel gas, charcoal etc. are all combustible.

 

[cda]

All for allowing the shelf say IIIIIII

all those opposed say nahhhh

 

[Moscow]

Big ole NAHHHH!!!!!!!

 

[north star]

( & )

All for allowing the shelf say IIIIIIIall those opposed say nahhhh"

I'm not a Code Official, but I'll go ahead and play one here in the Box.My question would be, ..."Will allowing this formica type countertop to

be installed underneath a compliant hood system, increase the

mathematical probability for the spread of a fire event or not ?"

As long as there is a compliant fire suppression system installed

underneath the hood and a Type K portable fire extinguisher located

nearby, ...I would probably approve it and move along !

( & )

 

[cda]

http://m.youtube.com/watch?v=s0s0migulb8