Architecture crossword - 3

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Across
  1. 3. A snow house in the form of a dome in artics(5)
  2. 5. space between 2 columns or piers or vertical planes(3)
  3. 6. A metal bar with a catch for fastening a door(5)
  4. 7. Relating to greek styles of dorians(6)
  5. 8. A natural chamber in a hill etc(4)
  6. 9. Central and principal part of a church(4)
  7. 11. _ for performance of a play or movie shooting(3)
  8. 12. highest horizontal line where 2 roof areas intersect(5)
Down
  1. 1. A distinctive section or ornament at the apex of a roof(6)
  2. 2. The principal front of a building(6)
  3. 4. A structure of strips of wood or metal crossed and fastened together leaving space in between(7)
  4. 10. vertical element in a stair(5)