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