Hello, We are going to install an open fireplace with an insert in our house which we are renovating, and it will weigh 1.2-1.5 tons.

The fireplace will be located in a corner, see PDF, and there is a floor joist against the wall on the left of the picture and the center-to-center measurement of the other joists in the foundation is 1.2 m. The joists have a dimension of 15-20 cm. I have drawn in concrete blocks as supports in the picture, but I don't think that will be enough. How would you ensure that the foundation can support the fireplace?
 
R Rick. said:
Hi, We are going to install an open fireplace with a stove insert in our house that we are renovating and it will weigh 1.2-1.5 tons.

The fireplace will be in a corner, see PDF, and there is a floor joist against the wall to the left in the picture and the center-to-center measurement of the other joists in the foundation is 1.2 m. The joists have a dimension of 15-20 cm. I have drawn in lecablock as supports in the picture, but I don't think it's enough. How would you ensure that the foundation is strong enough to support the fireplace?
Can anyone answer?
 
Insert the drawing as an image instead..

Edit: generally don't know how to do it, but my Keddy Superfire which is built of lättklinker, where the chimney (single-story house) stands on the stove, is built from the ground and up through the floor structure ...
 
R Rick. said:
Hi, now I have uploaded a picture so you can answer!
 
  • Blueprint of a room plan showing dimensions and details for building an open fireplace with side and front elevation views.
Hello,

We are planning to install an open fireplace with an insert in our house, which we are renovating, and it will weigh 1.2-1.5 tons.

The fireplace will be located in a corner (see PDF), and there is a floor joist against the wall to the left in the image. The center-to-center measurement of the other joists in the foundation is 1.2 meters. The joists have a dimension of 15-20 cm. I have drawn in lecablocks as supports in the image, but I don't think that's sufficient. How would you ensure that the foundation can support the fireplace adequately?
 
  • Blueprint showing a corner fireplace design with cross-sections A and B, dimensions, and placement details for supporting lightweight concrete blocks.
Cheesen
How is the substrate under the foundation? If it moves, all plans will fall.
 
Cheesen Cheesen said:
How is the foundation substrate? If it shifts, all plans could fail.
Hi, it's soil/gravel.
 
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