Free Standing Header

1 I have a pre-existing 50x70’ truss type structure that I would like to put a free standing bi-fold door at one end. I have not poured the floor or apron area yet and would like to know what your footing requirements are for the free standing application. I do not require any external sheeting, but would like a single man door framed in the main structure. Thanks, Ken. PS: I have bought both your hydraulic and bi-fold doors in the past, when I lived in Tehachapi, Commifornia

2 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

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

4 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?