Wobbly floor even at cc ~35

[Lostmoose]

If reinforcement is to be installed, it should be on the side of the beam and as high as possible.

...because more force is needed to "compress" the material than to stretch it?

 

[seniorkonsult]

The largest load-bearing dimension depends on the height but to some extent also on the thickness of the flange. When calculating the moment of inertia (W) of a beam, the formula (W[SUB]x[/SUB]=bxh[SUP]2[/SUP]/6) is used where b=beam width, h=beam height). As you can see, it involves beam height x beam height.

 

[Lostmoose]

The largest force-absorbing dimension depends on the height but also to some extent on the flange's thickness. When calculating the moment of inertia (W) of a beam, the formula (W[SUB]x[/SUB]=bxh[SUP]2[/SUP]/6) is used where b=beam width, h=beam height). As you can see, you take beam height x beam height.

I must have been quite tired yesterday; I thought you wrote that the reinforcement should be as high as possible, not as high as possible. Of course, I got curious

 

[Lutte]

A standard flat bar type 100x6 that you screw onto the side of the beams every other one should support the floor quite adequately. You probably won't need to cover the whole thing but can divide each flat bar in half and mount it.

We often use flat bars to remove sag in walkways and build stairs with flat bars with long spans of pl

 

[Anna_H]

If the attic is going to be a sleeping loft, then insulation wouldn't be necessary underneath for the temperature's sake, right? Or is the roof going to remain uninsulated in the future as well?