Well, I knew it wouldn't be long. The new things in the codes though are more fireproofing.
Source:
www.nist.gov...
The model code changes address such areas as the fire resistance of structural components, the use of sprayed fire-resistive materials (commonly
known as “fireproofing”), elevators for use by first responders, the number of stairwells, and exit path markings.
So, all we learned from 9/11 is that we need fire protection on construction components? I could have told you that 6 billion dollars ago.
Two more model code changes will be considered for the next edition of the IBC in 2009. In the first case, a broad industry coalition is
developing a proposal that would recommend structures be designed to mitigate disproportionate progressive collapse and ensure, for the first time,
minimum structural integrity and robustness requirements for structures as complete systems.
I could be wrong but I was taught that once the building is put together that it is considered a "complete system". I could be reading it wrong
though.
The second proposed code change would require the use of a nationally accepted standard for conducting wind tunnel tests routinely used for
determining wind loads in the design of tall buildings. During its investigation of the collapses of the WTC towers, NIST found that wind load
estimates from three separate wind tunnel tests on WTC models differed greatly.
This one is just new wind tunnel tests.
Although I'm glad to see that NIST has had some recommendations to the coding world, I am a little unimpressed with it. Basically what they are
saying is that the codes in place now are acceptable with the addition of these three codes.
Now, I haven't read the codes yet, so I could also be way off base in my assumptions here.
Any thoughts? Anyone read the new codes? Are they printed up yet?
Just thought I'd put this info out there. I haven't seen it posted yet.
[edit on 6/28/2007 by Griff]