Which material is used for building foundations, walls, and columns?

What is the main component of concrete?

What is the atomic diameter of iron?

Which material is used for making furniture and building houses?

What is the composite material created by mixing binding material, aggregate, water, and admixtures?

Which material is an alloy of iron with a carbon content?

What is the melting temperature of iron?

Which material is used for building machinery, tools, and public works?

What is the main purpose of timbers in construction?