If you believe you know the size of a brick, take a look at
this page.
I must say that I did not count them before. Now I did and I found 24 to 25 per floor. For 8 ft room height and 1 ft ceiling width, which are both quite at the minimum, my guess would be 35 rows.
Never call me a rivet counter - there is so much else in the world to count.
I blame a certain modeller of a certain station for drawing me into this scene.
Now I suffer from chronic hypercountistics - or would that be countism?