Building Materials 2

Question	Answer
Aluminum	a lightweight chemical element (Al); the most abundant metallic element in the Earth's crust
Bedrock	the solid rock layer beneath sand or silt
Cast Iron	a brittle alloy with high carbon content; iron that has been melted, then poured into a form and cooled; can be made into any shape desired
Cement	a binding material, or glue, that helps concrete harde
Concrete	a mixture of water, sand, small stones, and a gray powder called cement
Iron	a chemical element (Fe); one of the cheapest and most used metals
Masonry	a building material such as stone, clay, brick, or concrete
Pile	a long, round pole of wood, concrete, or steel driven into the soil by pile drivers
Reinforced Concrete	concrete with steel bars or mesh embedded in it for increased strength in tension; in pre-tensioned concrete, the embedded steel bars or cables are stretched into tension before the concrete hardens; in post-tensioned concrete, the embedded steel bars or cables are stretched into tension after the concrete hardens
Shear-Walls	solid concrete walls that resist shear forces; often used in buildings constructed in earthquake zones
Silt	sediment particles ranging from 0.004 to 0.06 mm (0.00016 to 0.0024 inch) in diameter
Steel	an alloy of iron and carbon that is hard, strong, and malleable
Wood	a common natural material strong in both compression and tension
Wrought Iron	an iron alloy that is less brittle than cast iron

Resource summary

	Created by Niat Habtemariam almost 12 years ago

	Copied by Clara Kam over 7 years ago