I had forgotten about this posting, but was thinking about the issue earlier this mornng. I think everyone is becomming more and more concerned about the performance of certain types of installed systems rather than the performance of particular products.
Bob mentioned some good ones, but the ones that I frequently am involved with are windstorm resistant assemblies. The requirements here in Texas not only have to do with individual products (like glazing and framing) but with anchoring and what the item(s) are anchored to. It does no good to specify hurricane-resistant glazing if you don’t have a hurricane-resistant frame to put it into (with at least an inch of glazing bite in most cases). And it does no good to specify hurricane-resistant glazing and frames if you don’t indicate the anchoring to transfer the load to a hurricane resistant wall assembly.
I am also facing this more frequently with ballistic-resistant (“bullet-proof”) stuff. Although it is done all the time, what good does it do to specify a “bullet-proof” window if the wall assembly is not indicated to have comparable performance. I am told by many law enforcement agencies that the bad guys simply aren’t that smart in most cases; that by the time a bad guy realizes that he is trying to fire through UL-rated Level 3 glazing (rated for .44 magnum weapon) with his .32 Saturday night special and might do better firing through the wall, a bunch of cops will have drawn down on him. I have specified “bullet-proof” glass in a wood frame in some cases, but usually when I raise the issue, we do agree that at least we need a bullet-resistant window assembly even if we don’t do the whole wall (and adjacent door).
I also see, but not as often, requirements for “blast-resistant” construction, and I am sure that many of you see much more of it than I do. Many clients will focus on the glass without giving adequate consideration to the fennestration assembly, the wall around it, or the interface between the two (the anchorage).
These kinds of issues actually go to a deeper problem with MasterFormat, one that really does not go far enough in recognize certain types of “work results” for these types of assemblies.
I am thinking about a small conference center I am working on now. There is an operable partition, and I am specifying the product to be identical to those that have been tested and have achieved an STC rating of more than 50. have not included field testing. In this case, the specified performance is a product requirement. Were I to specify a field test (field quality control in Part 3), that would be a characteristic of the installed system.
I am concerned about the response of the SectionFormat team to Bob’s concerns which have been similar to responses to concerns I have raised about MasterFormat “classifications” of certain work results and educational materials being developed by CSI. I would suggest that “products” developed under the CSI banner should go beyond what appears to be correct to most people. There are those who will “get it” cognatively, and I would suggest that there are others who will use it and then have one of those “aha” moments, realizing that there is something more substantial that what might have met the eye originally. I believe that we have an obligation in all that we work on to be “clear, concise, correct, complete”; that is really at the core of developing good specifications. SectionFormat is a tool that should enable us to better achieve the 4Cs, not a tool dumbed down for the masses.