Hello
I was planning to build an intermediate floor where the lower level would have visible "timber" underneath.
I have access to sawn lumber 150x150 mm which I would like to use as the floor joists to avoid building too much height. But since I haven't found recommendations or strength-rated variants, I thought I would see if I could get some input from here.
The span is 3400 mm.
As the foundation of the floor joists, I want to lay sawn timber/sparre at 150x150 (G4-2), cc 600 or 750
On top of that, we were thinking of simply using planed tongue-and-groove boards as a visible "ceiling" between the joists.
On top of this, we want to build 45x45, or 45x70mm studs crossed against the joists to accommodate insulation. cc 300 or 600
On top of this, we will lay chipboard flooring as a substrate for parquet on the upper level.
I am including a simple sketch.
My own amateur carpentry skills suggest this is a stable setup, but it's outside standard procedures and I would like to have it confirmed.
Alternatively, I could build in the timber beams cosmetically, but I would prefer to avoid that to save money and work.
I was planning to build an intermediate floor where the lower level would have visible "timber" underneath.
I have access to sawn lumber 150x150 mm which I would like to use as the floor joists to avoid building too much height. But since I haven't found recommendations or strength-rated variants, I thought I would see if I could get some input from here.
The span is 3400 mm.
As the foundation of the floor joists, I want to lay sawn timber/sparre at 150x150 (G4-2), cc 600 or 750
On top of that, we were thinking of simply using planed tongue-and-groove boards as a visible "ceiling" between the joists.
On top of this, we want to build 45x45, or 45x70mm studs crossed against the joists to accommodate insulation. cc 300 or 600
On top of this, we will lay chipboard flooring as a substrate for parquet on the upper level.
I am including a simple sketch.
My own amateur carpentry skills suggest this is a stable setup, but it's outside standard procedures and I would like to have it confirmed.
Alternatively, I could build in the timber beams cosmetically, but I would prefer to avoid that to save money and work.
6*6" is on the borderline of being too weak for an intermediate floor with a 3.4 m span, I think, but if you place them at 600 mm center-to-center and screw the floor particleboard on top, it will carry better.