environmental puzzel

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Across
  1. 4. a method of urban planning that divides land
  2. 5. sculpted female figures that act as a collumn or pillar
  3. 7. a short wall that can be used for a variety of purposes
  4. 8. a horizontal support of timber, stone, concrete, or steel across the top of a door or window
  5. 9. the sill of door
Down
  1. 1. a lightweight, prefabricated steel truss that supports roofs and floors in buildings
  2. 2. a wall that encloses the building but does not provide structural support
  3. 3. a type of cut that severs or divides a piece of wood parallel to the grain
  4. 6. the collection of materials and components that separate the inside of a building from the outside