addon to bldg, sprinklers required?

[BSSTG]

Greetings,

Hypothetical here. I expect to see this in the near future.

Existing legal A2, occ load over 100. Older structure with no sprinklers. So they want to add on a fair amount of square footage. Would they at that point be required to sprinkle the whole structue? I am inclined to think yes as conditions of the original CO have changed and a new addition would require a new CO.

thanksabunch

BSSTG

 

[steveray]

SPEAKING GENERALLY.....Yes.....unless they use a firewall and call the addition a different building.....The CO only applies to the work performed....you don't re-CO the whole building...

 

[Mac]

When the OL goes over 100 a sprinkler is required.

 

[midwestFCO]

More than likely. Definitely in my jurisdiction as we have our own sprinkler ordinance that sounds as if it would kick in the requirement, but ours is based on square footage.

 

[north star]

( & )

BSSTG,

I might cite Section 115.1 [ `06 IBC ], and ask how the owner wants

to achieve compliance with Section 903.2.1.2 [ `06 IFC ], and Section

3409.5 for Accessibility.

I'm not sure, but **steveray** might be citing / using Section

3410.2.3. for the fire wall requirements.

( & )

 

[SCBO1]

Key word "ADD". Increasing floor area. 2006IEBC, chapter 10, section 1002.3 fire protection systems takes you to IBC chapter 9 to enforce.

See 2006IBC 903.2.1.2.

IMO, Yes, sprinkler system required.

pc1

 

[steveray]

I didn't have the section, but I knew there was a way....Thanks NS...Sadly we are still at 300 occ for A sprinklers..

 

[Francis Vineyard]

The CO should comment on the conditions the new construction is added to the existing building.

The following are excerpts from the IBC Code Commentary Section 3403.1.

“An addition is an increase in the area to an existing building. When a new building is erected immediately adjacent to an existing building and they are separated by a fire wall, it is considered a separate building, not an addition to the existing structure. The new building must be designed to comply with the technical provisions of Chapters 1 through 33; not with the provisions of this chapter (chapter 34). The existing building must be evaluated considering the elimination of the adjacent open space now occupied by the new building.

An existing structure that is of a type of construction that does not comply with the height and area limitations of Table 503 may not be added to,unless the type of construction is upgraded or the allowable building height and area are increased through the addition of a sprinkler system throughout both the existing building and the addition.

A building with a proposed addition is to be evaluated based on the type of construction of the existing building or the addition, whichever is the lower type. When reviewing for compliance with Table 503, see Section 602.1.1”

Francis

 

[mtlogcabin]

2009 IEBC

1002.3 Fire protection systems.

Existing fire areas increased by the addition shall comply with Chapter 9 of the International Building Code .

[F] FIRE AREA. The aggregate floor area enclosed and bounded by fire walls, fire barriers , exterior walls or horizontal assemblies of a building. Areas of the building not provided with surrounding walls shall be included in the fire area if such areas are included within the horizontal projection of the roof or floor next above.

Yes it is required

The exception is you can seperate the exiting building into a differant fire area with fire walls or fire barrier.

Table 707.3.9 would require a 2 hour fire barrier rating

 

[Builder Bob]

If they wanted to put a firewall up at the point of addition, the existing may be left alone (if not a change of occupancy - see chapter 34) , the new addition would have to meet current code. (BTW, any work performed inside the existing, would have to meet current code, but portions of hte building untouched or unaltered could remain as is...... a.k.a no sprinkler system)

 

[mtlogcabin]

It isn't just sprinklers that would be required. All of chapter 9 would be applicable including notification if the existing fire area is increased