These textures are all 2048x2048. If you leave them at the default size, they will actually be perfect for rats style maps. If you want to use them for normal maps, re-size the textures in Hammer with the texture application button. The bricks look normal at .01, but the concrete looks really nice at .05 IMHO. Just mess around with it.
Okay, at first Hammer read the texture with no problems. Suddenly, Hammer couldn't read the textures anymore and they show up purple. However, CS:GO still still renders the texture correctly! If anyone knows why Hammer is not displaying the textures correctly, please post a comment or pm me!
I'll be updating these periodically.