If anyone can offer any advise regarding a bi fold door
We currently have a standard 3580x2100 bi fold door which sits on the slab which supports it. (Refer attached photo) Adter two years of endless problems with the door the building company has decided to replace it with a top hung door.
The existing bi fold door is bottom a mounted unit which is supported by the house slab so there is no load bearing on the top of the door
The header/lintel beam size that was fitted during construction of the house is made up of a c channel which is approx 150mm high by 50mm wide and 10mm thick.
This header/lintel was designed to ONLY support the roof above the bi fold door as the area above the door is load bearing.
The buider now wants to install a top hung bi fold door using the existing header/lintel to support this unit.
The door manafacturer advised us that the header/lintel above the door opening may require strengthning as the door needs to be supported from the top of the door, as they require screwing into the header/lintel above the door for the support.
As this opening is load bearing we dont believe the existing header was designed to support a top hung door.
What would be the correct steel header size to support the roof and the the top hung door. As per the photo the header/lintel was only designed to support the section of roof directly above the door. The brickwork above the door as per the photo has its own seperate lintel to support the bricks only.
We are concerned that the existing header/lintel is not sufficient to support the additional load of the new door.
Thank you for the last reply
Regards
Michael Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅