Thanks for the question, Mr. Martin. I know you're really interested in that issue.
I just want to say that the construction costs included in our estimates have been verified by the world-class architects we hired. We also hired a third party to review the construction costs. On top of that, we have our own service internally. What that means is that three separate parties are checking the construction costs.
We looked at comparable roofs in the U.S. that were built in a similar way. Using that benchmark, we found the costs to be more or less the same. We also worked with our consultants to examine the costs of arena-style roofing, which you would think was a cheaper option.
The roofing structure rests on steel columns that go all the way to the ground. As I mentioned, the total cost of the roof itself is around $40 million, but that includes the structure. If you compare that cost with the cost of a seemingly simpler roof, the difference is about 1.8% of the project cost, not very much.
Bear in mind as well that we cannot install a roof that does not comply with the National Capital Commission's Fibro requirements. We work with our consultants, our experts. We make sure our costs are as low as they can be and that the solutions we choose, while they might seem expensive, are consistent with the costs usually associated with the type of building in question.