i want to know what is light gauge steel and the diffrences between light gauge steel and steel for roof truss.
as a welder i can answere this. wel i think i can after 2 years of classes. so...light guage steel usually referes to the THICKNESS of the metal. also known as SHEET METAL. the only diffrences between light guage and roof truss is that a truss will be thicker metal ex- an i-beam for a structure is usually 1/2inch or 3/8 for smaller buildings. also there is no such thing as light weight steel. steel is steel the only thing that determins its weight is its size/thickness aluminum is a whole nother ballgame. ever see a pound of aluminum vs. a pound of steel? aluminum can be 1/2 or less the weight of steel. but its tensile strength suffers EX. say steel will snap at 70,000 pounds, aluminum will snap at 40,000 pounds, if it even snaps that is! it just tends to bend like rubber. aluminum is handy for many things because it will not rust.
