| 11. | Forms have been made using nearly every common structural material including air pressure supported fabric.
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| 12. | Teflon and aerogel are structural materials, polymers, for which the monomers may exist in nature.
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| 13. | This significantly reduces the cost associated with structural materials.
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| 14. | With the exception of structural metals, such as steel, all structural materials creep over time.
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| 15. | For multi-directional and out-of-plane loading cases, textile composites are widely used as high performance structural materials.
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| 16. | Flint is the other predominant structural material : its local abundance has ensured its frequent use.
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| 17. | Typical uses for molded plastics include molded furniture, molded household goods, molded cases, and structural materials.
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| 18. | Each cell incorporates structural material and a reversible interlock, allowing lattices of arbitrary size and shape.
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| 19. | The Courthouse exhibits an early use of iron as a structural material in a federal building.
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| 20. | Cast iron was not yet a structural material, or capable of being worked at this scale.
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