Clean room walls

[Builder Bob]

Maybe I am missing something, but isn't this regulated by Chapter 26 Plastics - Pull out the commentaries and read about 2606 - besides type II B has limitations and unless it is specifically addressed in section 603 as an exception to type II B construction, it cannot be used.




What say ye?

 

[rktect 1]

Just an update.

I had a meeting with the owner. It went well. I explained everything to him and what I needed for acceptance. He acknowledged it and said he would get back to me.

Today, sitting on my desk is his revised set of plans and the specifications sheets with test results showing that this material has passed NFPA 701 test method 1.

Now I feel better and I can approve this plan.

 

[classicT]

Just an update.

I had a meeting with the owner. It went well. I explained everything to him and what I needed for acceptance. He acknowledged it and said he would get back to me.

Today, sitting on my desk is his revised set of plans and the specifications sheets with test results showing that this material has passed NFPA 701 test method 1.

Now I feel better and I can approve this plan.

Excellent. Glad that one went the right direction.

Don't see too many membrane structures....especially not ones internal to another building.

 

[JPohling]

Excellent. Glad that one went the right direction.

Don't see too many membrane structures....especially not ones internal to another building.

Fairly common in the clean room world

 

[classicT]

Fairly common in the clean room world

I'd agree with that...

 

[cda]

How about compliance with 3102.3??

 

[classicT]

How about compliance with 3102.3??

Hang up......... Section 3102 covers membrane structures.

3102.3 Type of construction

Noncombustible membrane structures shall be classified as Type IIB construction. Noncombustible frame or cable-supported structures covered by an approved membrane in accordance with Section 3102.3.1 shall be classified as Type IIB construction. Heavy timber frame-supported structures covered by an approved membrane in accordance with Section 3102.3.1 shall be classified as Type IV construction. Other membrane structures shall be classified as Type V construction.

Exception: Plastic less than 30 feet (9144 mm) above any floor used in greenhouses, where occupancy by the general public is not authorized, and for aquaculture pond covers is not required to meet the fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701.



3102.3.1 Membrane and interior liner material
Membranes and interior liners shall be either noncombustible as set forth in Section 703.5 or meet the fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701 and the manufacturer’s test protocol.

Exception: Plastic less than 20 mil (0.5 mm) in thickness used in greenhouses, where occupancy by the general public is not authorized, and for aquaculture pond covers is not required to meet the fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701.​

Just an update.

I had a meeting with the owner. It went well. I explained everything to him and what I needed for acceptance. He acknowledged it and said he would get back to me.

Today, sitting on my desk is his revised set of plans and the specifications sheets with test results showing that this material has passed NFPA 701 test method 1.

Now I feel better and I can approve this plan.

Per rkect post with the update, it meets NFPA 701 Test Method 1. In that case, it also meets 3102.3.1, and per 3102.3, can be classified as II-B construction.