Installaton of Exterior French Door in 8" Block Wall
The home has one story above this wall with wood framing.
The floor joists are 12" on center and run perpendicular to the block wall.
I'm considering the use of a concrete saw to cut the opening to avoid cracking the wall.
1) What type of header construction is required here?
2) How far past the rough opening should the header go?
3) How shall the header rest/be attached to the block wall?
4) What materials are necessary between the header and floor joists?
5) The lower level has a poured concrete floor which ends at the edge of the block wall. What needs to be done to provide a smooth and proper height surface for the bottom of the rough opening, which will rest near the footing and/or remainder of the cut block?
Any additional suggestions for this install would be greatly appreciated.
A lot depends on the actual rough opening width you need for the door and the span of the floor joists.
Rough Opening Size
The rough opening size needs to be 73.5 " wide x 80" high.
There are 8 floor joists that need to be supported which include going beyond the rough opening approx 6" each side, (if that is enough?).
Need to know the span of the joists. What is the distance between the point where the joists sit on the wall and the point where the joists sit on the beam?
Perhaps a lack of communication. I'm thinking the info you are asking has already been provided. If I wasn't clear let's try again...
The floor joists are 12" on center, and the next joists over from the edge of the rough opening would be approx. 6" past the rough opening.
If I'm not understanding your needs, please bear with me and rephrase your questions so I get it.
Block wall runs one way. Joists run perpendicular to the wall. Beam runs same way as block wall. The joists are supported at each end: the block wall supports one end, the beam supports the other end. What is the distance from the block wall to the beam?
Picture below shows a beam and a wall. What's this distance between your wall (where you want the opening) and the beam?
1) Depends on how much vertical distance you have between the slab and the bottom of the sill plate. Let us know.
2) Depends on the type of header system. Doubling or tripling up the rim joist is one route, installing a steel or masonry lintel is another route. It all depends.
3,4) Depends on the type of header.
5) Depends on what you have there below the top-of-slab line. Block? Poured foundation?
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