Light gauge steel is steel sections made from thin sheets of uniform sections without the application of heat. Steel structures using Computer numerical control machines are filled with lightweight concrete and covered with gypsum board or concrete. can be used fully or partially to complement other types of construction. The sheets are typically extremely thin (1-8mm), and the sheet surface is coated with a zinc , This process enables steel manufacturers to produce light-weight but high tensile steel sheets. This results in buildings that are more stronger, durable and easier to build.