Framed+structures

Steel has to me covered from corrosive damage, so curtain walls or other type of coverings can be added. Coverings in frame construction are intended to isolate weather effects and exterior sounds **.
 * Is a skeleton that allows different type of coverings to create roof, walls, etc. Frame structures could be made of wood, steel, concrete or other materials. There are types of framed structure. Heavy Timber Frame is the oldest one. It uses long and thick members. It was used mainly in Asia and Europe. Then it was partially replaced for the Light Frame Structure created in North America. The difference is that its members are thinner and lighter than the others and that they are easier to join together using nails. Steel framing allows to create higher structures because steel is more resistant than wood. Its pieces are joint using wending or riveting.