Considering how to reinforce the mid-floor structure in our townhouse. The problem today is that the floor structure moves and vibrates when walking upstairs or when the children are playing there.
Currently, it looks as follows
Floor particleboard 22 mm
Beam structure 165 mm
Beam 20 mm
Plywood 8 mm
Previous stretched ceiling
The beams are 4360 mm long and are spaced at 60 cm centers, and in some places at 45 cm centers.
I've considered adding two rows of cross bracing. Could that have an effect?
How would it work to attach 45x45 wood on each side of the beams at the top closest to the chipboard to stiffen it up?
Or does anyone have a better suggestion?
Currently, it looks as follows
Floor particleboard 22 mm
Beam structure 165 mm
Beam 20 mm
Plywood 8 mm
Previous stretched ceiling
The beams are 4360 mm long and are spaced at 60 cm centers, and in some places at 45 cm centers.
I've considered adding two rows of cross bracing. Could that have an effect?
How would it work to attach 45x45 wood on each side of the beams at the top closest to the chipboard to stiffen it up?
Or does anyone have a better suggestion?
There are plenty of threads in the Flooring Forum, for example this one.
http://www.byggahus.se/forum/golv/140032-laegga-golv-i-gammalt-hus.html
Feel free to use the search function!
http://www.byggahus.se/forum/golv/140032-laegga-golv-i-gammalt-hus.html
Feel free to use the search function!
Very long span for that beam dimension.Stommen said:
Blocking can help somewhat (traditionally called cross bracing although nowadays it’s often not actually "crossed").
Your suggestion with 45x45 at the top is what gives the best effect. Even better if you could manage to do something similar at the bottom as well. Maybe a 45x45 at the top and one at the bottom? They don't necessarily need to run the entire length of the beam, probably about 80% of the length in the middle of the beam is sufficient.
You also get an increase in stiffness if you glue the floorboards to the beams.