I made a fast video howto to show not only how to create the arched roof using a nurbs curve and loft but how to create the more complex roof with the arches that are on the sides of the building in the image.
It's not an exact match to the image but should demo all the concepts needed to complete a good model of the structure and hopefully demonstrates a couple useful work flows and tools like - ep curves, lofts, booleans, and the lattice deformer.
Hope it helps and feel free to ask questions if you need too.
-Rick
https://youtu.be/R6nxL7hskYY
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 13-11-2012 at 04:32 AM.