Construction Materials Part TWO

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Across
  1. 4. A naturally occurring material composed of calcium sulfate and water molecules
  2. 5. Stronger than ordinary glass and difficult to break
  3. 6. Collective term for assemblies
  4. 8. The ability to of a material to resist fire
  5. 9. (three words) an interior wall that extends from a floor to the underside of the floor to prevent fire from spreading
  6. 11. a material that is plastic and thermo regulated
Down
  1. 1. Plastic material fused by heat
  2. 2. Also called drywall, sheetrock or plasterboard
  3. 3. Made by putting thin layer of plastic between the two glass layers
  4. 7. Tempered glass with wire mesh inside it
  5. 10. Thick, brick like blocks of glass