The fire's not going to start there. You're going to have an area of fire origin, and that fire is going to be contained within a compartment.
What the committees do or what the researchers do is build a fire compartment, as would typically be seen in terms of what's currently required under the code. Usually, when you build buildings, they're compartmented by floor, at the very least, and sometimes they're compartmented by rooms. We take an area that's indicative of what would be built, and we conduct the fire in that area.
If that fire were to breach that area, then we would do the calculations to determine what would happen when it reached the second fire compartment. It's not generally going to go from this compartment to the next, all the way through.
We do have plans over the next two years to actually build a six-storey building outside and burn it. We will be taking data from that and using that in our codes. We haven't gotten to that stage, but we're comfortable with the information that's coming back now, just with the compartmentalized non-sprinkler tests that we're conducting.