bolts etc
8. Compare merits and demerits of steel and aluminium as building material.
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Step-by-step explanation:
merits:
Air tightness
High strength to weight ratio
Ease in fabrication and assembly
Cryogenics
Low Handling and transportation cost
High reflectivity
Corrosion resistance
Appearance
High Scrap value
Sound proof
Maintenance
Air Tightness
demerits:
Expensive raw material.
Expensive fabrication. Requires special techniques to weld.
Flamnable. ...
Corrodes rapidly in salt water. ...
Softer than steel.
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