Table 705.8 footnote g.

[Francis Vineyard]

2009 IBC; R-2 less than 5 ft. from Type 2 non-sprinklered open parking structure on same lot.

Does there need to be a zero fire-resistant wall to block the openings only on the side of the open parking structure less than 10 ft. adjacent to the lot line?

TABLE 705.8

g. The area of openings in an open parking structure with a fire separation distance of 10 feet or greater shall not be limited.

406.3.7 Fire separation distance. Exterior walls and openings

in exterior walls shall comply with Tables 601 and 602.

The distance to an adjacent lot line shall be determined in

accordance with Table 602 and Section 705.

TABLE 602 d. Open parking garages complying with Section 406 shall not be required to have a fire-resistance rating.

Francis

 

[north star]

&

Francis,

Isn't there any type of Zoning setback distance involved between

the two structures?

REVISED after I actually read the OP!.......D`OH !!

&

 

[Francis Vineyard]

&Francis,

Isn't there any type of Zoning setback distance involved between

the two structures?

&

Apparently not; just went through their site plan review.

Francis

 

[Big Mac]

1st order of business is to look at the definition of fire separation distance

Fire Separation Distance = the distance measured from the building face to:

1. the closest interior lot line

2. the centerline of a street, alley, or public way

3. to an immaginary property line between two buildings on the property.

Section 702.

2nd, establish the immaginary property line in accordance with Section 705.3.

Once the imaginary property line is established, you then go to the Table to determine opening protection requirements.

 

[Francis Vineyard]

I keep ending up at Table 602 footnote d. zero rated wall with no openings less than 5 ft.; 25% to less than 10 ft. after that unlimited.

Francis

 

[north star]

* + *

"I keep ending up at Table 602 footnote d. zero rated wall with no openings lessthan 5 ft.; 25% to less than 10 ft. after that unlimited."

But your OP mentions "less than 5 ft."......Please clarify!.....Are you also looking at

Table 705.8?

From your OP: "406.3.7 Fire separation distance. Exterior walls and openings

in exterior walls shall comply with Tables 601 and 602.......The distance to an

adjacent lot line shall be determined in accordance with Table 602 and Section 705".

Which section provides the "most restrictive" application?

+ * +

 

[Big Mac]

I'm not entirely sure if you and I are the same wave length here. A sketch would help, if you have the abilitiy to post one. Sounds like there two separate conditions here that need to be addressed.

1st) there is a property line and separation issue to an imaginary property line betwen buildings. Section 705.3. Also reference Section 706.8 as directed in footnote c of Table 705.8. That is the condition that I assumed we were addressing when I posted previously. Perhaps that was my mistake. If however, that is one of the conditions that needs to be addressed, one is required to either treat both buildings as one OR place an imaginary property line between the two buildings. One must then determine wall construction and opening protection based on the location of that imaginary property line.

Please bear in mind that footnote g apparently does not come into play until the building is greater than 10' from a property line. Table 705.8.

Is this parking structure a carport or is it a legitimate open parking garage structure for public use?

Should I have instead been concerned with the distance to an actual lot line on the other side?

 

[north star]

+

Big Mac,

In Francis' OP, he states that both structures are on one lot.

I'm guessing that Open Parking structure is an accessory

use to the R-2.



+

 

[KZQuixote]

2009 IBC; R-2 less than 5 ft. from Type 2 non-sprinklered open parking structure on same lot.Does there need to be a zero fire-resistant wall to block the openings only on the side of the open parking structure less than 10 ft. adjacent to the lot line?

Francis,

I believe that the openings you're referring to are in a wall that's perpendicular (adjacent) to the lot line.

Am I correct?

Bill

 

[Francis Vineyard]

The 5 story R-2 exterior walls (not a fire wall) has no openings and is 2 hr. fire-resistance per Table 601 being more restrictive. The 5 tier open parking structure type 2A faces the apartment along 2 sides from a corner. The parking structure is not attached to the apartment or vice versa.

Though 2A; there's Table 602 footnote d

Francis

 

[High Desert]

A sketch would really help.

 

[Big Mac]

Here is what I think I have gleaned so far. 2 buildings. Not similar types of construction - therefore cannot be considered as one building.

Garage structure and Apartment structure have two common sides. Therefore either the apartment building must wrap the garage building or the garage building must wrap the apartment building. I gues one othe rpossibility is that the garage building might be sitting at a 45 degree angle to the apartment building. Which of these three scenarios is correct.

 

[Francis Vineyard]

I'm not entirely sure if you and I are the same wave length here. A sketch would help, if you have the abilitiy to post one. Sounds like there two separate conditions here that need to be addressed. . . .

A sketch would really help.

I'll try to post a drawing before the contractors breakfast first thing tomorrow morning!

Here is what I think I have gleaned so far. 2 buildings. Not similar types of construction - therefore cannot be considered as one building.Garage structure and Apartment structure have two common sides. Therefore either the apartment building must wrap the garage building or the garage building must wrap the apartment building. I gues one othe rpossibility is that the garage building might be sitting at a 45 degree angle to the apartment building. Which of these three scenarios is correct.

The apartment is 3A; the parking structure is rectangular and the apartment wraps around one short and long side in a "L" shape.

Francis

 

[RLGA]

Though 2A; there's Table 602 footnote d

Footnote d applies only to exterior walls of parking garages when the walls have a fire separation distance of 10 feet or more. See the "d" footnote markings located by the 1-hour ratings in the "10 ≤ X < 30" row of Table 602.

If your fire separation is 5 feet of less, then the exterior walls of the parking structure need to have a 1-hour rating.

 

[Francis Vineyard]

Footnote d applies only to exterior walls of parking garages when the walls have a fire separation distance of 10 feet or more. See the "d" footnote markings located by the 1-hour ratings in the "10 ≤ X < 30" row of Table 602.If your fire separation is 5 feet of less, then the exterior walls of the parking structure need to have a 1-hour rating.

I looked right pass that one! Made the mistake again of reading 10 ≤.