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Pre Engineered Buildings with Wood Interior Framing

E

EugeneNinniePEAIA

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Joined
Oct 5, 2021
Messages
25
Location
Jackson Hole, WY
What is the construction type of a typical metal building with 1600 sq.ft. of Office B, 6400 sq.ft. of Factory F-1 1 story and S-2 exterior storage attached to main building at 1600 sq.ft.????
 
EugeneNinniePEAIA said:
What is the construction type of a typical metal building with 1600 sq.ft. of Office B, 6400 sq.ft. of Factory F-1 1 story and S-2 exterior storage attached to main building at 1600 sq.ft.????
Click to expand...
Not sure how you expect us to guess that... but if it is a PEMB with interior wood framing, I'd guess V-B But could be Type III, IV, or V.
 
Where is the CO? Have you talked to the AHJ? When was it built? What code was it built to?

Assume V-B unless you can prove otherwise.
 
No CO, just built. Cannot occupy until all interior is done per SFMO. We have spoken to them, they are mute. 2021 date built, 2018 IBC as per NUCOR building Systems. Nucor does not know nor do they want top provide for liability..............I am calling in for ammo in a hot LZ and they bring in canned corn
 
If there are no interior or exterior bearing walls and the only bearing is the structural frame then I think it meets the requirements for IIIB construction type, but without a known fire separation distance we can't determine any required fire resistance rating for the exterior walls.
 
With the info given, I would go with VB.

602.5 Type V. Type V construction is that type of construction
in which the structural elements, exterior walls and
interior walls are of any materials permitted by this code.

Allowable area works for F-1 and/or B.

Keep it simple.
 
At that building area: VB if the building is sprinklered, or if it is nonsprinklered and has at least a 13% frontage increase.
 
The F-1 base area with Type VB is 8500, and B is 9000, so either works.

I did not take into account the S-2 exterior storage at 1600, as it is not space in the structure, I took "attached" to mean adjacent to .
 
Sifu said:
If there are no interior or exterior bearing walls and the only bearing is the structural frame then I think it meets the requirements for IIIB construction type, but without a known fire separation distance we can't determine any required fire resistance rating for the exterior walls.
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Thats was my assessment. This building in in the middle of a 50 acre open tract....no other buildings around it
 
fatboy said:
With the info given, I would go with VB.

602.5 Type V. Type V construction is that type of construction
in which the structural elements, exterior walls and
interior walls are of any materials permitted by this code.

Allowable area works for F-1 and/or B.

Keep it simple.
Click to expand...
After seeing this, I will go with VB it fits the square footage better and keeping it simple...agreed!
 
RLGA said:
At that building area: VB if the building is sprinklered, or if it is nonsprinklered and has at least a 13% frontage increase.
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Very Interesting situation.
How about the main STEEL STRUCTURE Still Type 2, (no fire rated protection I suppose)

So lets consider that not only are the Contents but also add the non-bearing partitions to the Fire Load as well. Wonder how the NFPA would do a Risk Assesment to determine Sprinkler Design or need

Seem Type 5 assumes Structure (Bearing) is wood
 
steveray said:
Type 5 assumes nothing....As a wise man once said...You can build it out of laminated chicken fat....
Click to expand...
Steve, might you consider expanding your thought about these non bearing partitions being not much different from the Contents as to fire risk.

Seems with the combustible wood studs being "Protected" with drywall, it seems to be a lower risk situation with the Bearing Structure as steel vs the contents.

Reaching too far?
 
Genduct said:
Steve, might you consider expanding your thought about these non bearing partitions being not much different from the Contents as to fire risk.

Seems with the combustible wood studs being "Protected" with drywall, it seems to be a lower risk situation with the Bearing Structure as steel vs the contents.

Reaching too far?
Click to expand...
Yes....you need to look at 603....With contents, the assumption is some one sees the fire, with "structure" you get a concealed fire that grows and blows out aggressively before anyone notices putting the people and building at risk....remember, somethings are there to protect the people and some protect the structure....

SECTION 603
COMBUSTIBLE MATERIAL IN
TYPES I AND II CONSTRUCTION
603.1 Allowable materials. Combustible materials shall be
permitted in buildings of Type I or II construction in the following
applications and in accordance with Sections 603.1.1
through 603.1.3:
1. Fire-retardant-treated wood shall be permitted in:
1.1. Nonbearing partitions where the required fireresistance
rating is 2 hours or less.
1.2. Nonbearing exterior walls where fire-resistance-
rated construction is not required.
1.3. Roof construction, including girders, trusses,
framing and decking.

11. Partitions dividing portions of stores, offices or similar
places occupied by one tenant only and that do not
establish a corridor serving an occupant load of 30 or
more shall be permitted to be constructed of fireretardant-
treated wood, 1-hour fire-resistance-rated
construction or of wood panels or similar light construction
up to 6 feet (1829 mm) in height.
 
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