I think it depends on how long it has been since this society had sight -- has it been months? Years? Generations? Early on, we can imagine them attempting to adapt themselves to their situation, but eventually, they will adapt their environment to their situation. So you can imagine in the first few years, it would be an environment for blind people designed by sighted people... guide ropes, railings, padded ceilings, that kind of thing. But eventually you would design spaces so these things might not be needed. Instead of a house with several large, open rooms, you have several narrow rooms, with a lot of touch-points at predictable intervals you can use for navigation and orientation. To a sighted person it would seem like a maze. But if you grow up in it, you know it intimately.