I will try not to get too technical with the response, but generally, when the National Research Council started the project about six years ago on mid-rise, there were a number of tests conducted. We looked at modelling. We looking at fire load in these buildings. We looked at fire spread with this type of construction and encapsulation. How do we protect these structures once they are built? We've continued with that now. That led to a six-storey transition in the building code. Now we're moving towards a 12-storey transition.
Right now, what we've been doing as late as last week is, we would build a room, a compartment, and we would introduce fire for about four hours, and we would see how the structure would react. It has been very favourable. The results have been that they basically self-extinguish.
For four hours the unit is burning. We take measurements. We take smoke. We take all kinds of data from this. We can translate that into technical provisions into our building codes. If the structure failed after one hour, we would say we need this much more protection. If it failed under three hours, we would need this much protection.
There's quite a bit of research. We're working with our United States counterparts as well and taking some of that data and incorporating into our research.
One of the biggest concerns that Scott, one of our colleagues here, mentioned was construction under fire, so we've also been looking at what we need to do to protect a site during construction, because that's the biggest risk. It's not generally when the building is built. Then, it's like any other building. It's protected. It has sprinklers, and everything is fine, but what do we do during construction to save that building from arson or any type of fire condition? We've introduced requirements into the fire code to mitigate that risk as well.