Three-story R2 on top of one-story mixed use

[jar546]

The building itself is four stories. The first floor is mixed-use commercial spaces. On top of the commercial space are three stories of R2 units.

Can the R2 units, since they are three stories or less, use the Residential section of the IECC?

 

[Yankee Chronicler]

I assume you meant IECC?

R101.4.1 Mixed residential and commercial buildings.
Where a building includes both residential building and
commercial building portions, each portion shall be separately
considered and meet the applicable provisions of
the IECC—Commercial Provisions or IECC—Residential
Provisions.

 

[jar546]

I assume you meant IECC?

Seriously? That typo just had to be pointed out?

Back to the question. Can you answer it?

 

[Yankee Chronicler]

I answered it by citing the applicable section from the IECC.

...
each portion shall be separately
considered and meet the applicable provisions of
the IECC—Commercial Provisions or IECC—Residential
Provisions.

 

[jar546]

I answered it by citing the applicable section from the IECC.

Citing a code section does not answer the question. What if it takes two code sections to answer the question?

 

[Yankee Chronicler]

But it doesn't take two code sections to answer. Furthermore, the part of the question about the R-2 being three stories or less is irrelevant.

The IECC citation answers the question completely.

R101.4.1 Mixed residential and commercial buildings.
Where a building includes both residential building and
commercial building portions, each portion shall be separately
considered and meet the applicable provisions of
the IECC—Commercial Provisions or IECC—Residential
Provisions.

You have posited a building with mixed use commercial on the ground floor and R-2 residential on three floors above that. The IECC clearly establishes that the residential portion of the building is considered separately from the commercial portion, and is subject to the Residential Provisions portion of the IECC.

 

[jar546]

But it doesn't take two code sections to answer. Furthermore, the part of the question about the R-2 being three stories or less is irrelevant.

The IECC citation answers the question completely.



You have posited a building with mixed use commercial on the ground floor and R-2 residential on three floors above that. The IECC clearly establishes that the residential portion of the building is considered separately from the commercial portion, and is subject to the Residential Provisions portion of the IECC.

I think you are wrong because you did not read it all. The answer is in the definitions, which is why I chose to ask this question and develop a discussion.

 

[steveray]

RESIDENTIAL BUILDING.

For this code, includes detached one- and two-family dwellings and multiple singlefamily dwellings (townhouses) and Group R-2, R-3 and R-4 buildings three stories or less in height above grade plane.

Are the commercial spaces above grade plane?

 

[jar546]

RESIDENTIAL BUILDING.

For this code, includes detached one- and two-family dwellings and multiple singlefamily dwellings (townhouses) and Group R-2, R-3 and R-4 buildings three stories or less in height above grade plane.

Are the commercial spaces above grade plane?

It is a four story, slab on grade with the first story all mixed use commercial and on top of that are the three stories of R2. The building is four stories.

So the question is, is the entire project under the commercial energy code or is it split?

 

[steveray]

It is a four story, slab on grade with the first story all mixed use commercial and on top of that are the three stories of R2. The building is four stories.

So the question is, is the entire project under the commercial energy code or is it split?

Now I see your question....Split...the second and third floor are residential and first and fourth are commercial.......I love the IECC.....

 

[jar546]

Yep. Still waiting for an answer.

 

[jar546]

R101.2​

This code applies to residential buildings, building sites and associated systems and equipment.

RESIDENTIAL BUILDING - For this code, includes detached one- and two-family dwellings and townhouses as well as Group R-2, R-3 and R-4 buildings three stories or less in height above grade plane.

Must I spoon-feed this thread?

 

[Yankee Chronicler]

So far two answers have been offered. You apparently don't agree with either of them, so perhaps you will have to break out the spoon.

 

[jar546]

So far two answers have been offered. You apparently don't agree with either of them, so perhaps you will have to break out the spoon. Your post #6 is incorrect.

Post #6 is incorrect.