From a post on Facebook by Andrew Kerr, a licensed architect with 20+ years experience, who has worked on several Federal projects.
1. With a projected size of 90,000 sf and a budget of $300M, the cost per square foot would be $3,333. No building costs anywhere near that. $1,000/sf is astronomical.
2. Assuming a drawing in the classical style according to the Golden Ratio, the building footprint is 380feet by 235feet.
3. It’s supposed to be a ballroom for 999 people. 20sf/person is pretty comfortable. That’s only 20,000 sf. Add in 10,000 sf for support functions and another 10,000 sf for pre-function, extraordinarily generous, that’s still only 40,000 sf. Leaving 50,000 sf.
4. The renderings of the building exterior and interior don’t match. The interior shows a room of about 200×100. The exterior is 4.5 times that size.