Wasn't the idea here was that it was cheap and quick to lay out concrete which is why it was so popular the post-WW2 building boom? This seems like a highly functional approach (see cost effective) - for the time period. But clearly not the material one should use when utilizing a brutalist approach in modern buildings.

Not sure why they made the windows like that other than a sci-fi style exterior. Not all brutalist buildings have tiny windows though. Here's one from Toronto (a city full of brutalist architecture due to the era it exploded in growth): http://farm4.static.flickr.com/3026/2410356675_5df008e7f2.jp...