Steel is used in construction because it has high strength, low weight and corrosion resistance. It is also used to make structural supports for buildings, bridges and other structures. Steel is commonly used to make skyscrapers, commercial and industrial buildings, schools, churches and stadiums.
Steel is the only metal used in the construction of the Eiffel Tower in Paris. It is also used to make parts of the Statue of Liberty and the Washington Steel Buildings. Steel is the most commonly used metal in the construction of ships, railroad cars and planes.
Some other examples of structures made with steel include the Sears Tower (Chicago), the Chrysler Building (New York), the Empire State Building (New York) and the Golden Gate Bridge (San Francisco).
Reinforced concrete is the building material that is most commonly used to build foundations and basements. It is strong and durable and is less expensive than stone or brick.
Other materials commonly used in foundations and basements include rock, brick, wood, sand and earth. Sometimes, all of these are combined to make the foundation.
Concrete is a mixture of cement, sand, water and gravel. Sand is added to help keep the cement powder dry. Sand is available in different sizes and different grades. These grades vary depending on what kind of structure you want to build.