Free Standing Header

1 looking at a approximate measurements hydraulic door, 16hx32 wide, side install on a wood machine shed, at present moment, I saw in your online site a illustration of cement forms for a self supporting frame work. Please direct me to the info., Ultimately i would like to install the door on a self supporting door structure thus eliminating strain on building. Thanks, John

2 existing Quonset building with light gauge by pass doors , new door must be totally self supporting with free standing header

3 We are looking to replace our slider door on our shed. Opening in 30' wide, by 16' tall. Will I need a Schweiss self standing header for this?