Hello!
I need to splice two beams in the floor structure that have rotted near the outer wall.
Now I'm considering which splicing method to use, the nailed one according to the Träguiden (http://www.traguiden.se/TGtemplates/...lt.aspx?id=822) or with carriage bolts? What is most common and best?
What dimension of bolt or threaded rod should one use? I'm not finding any information about this online.
The beams are in the dimension 4x9". It's only about 50 cm that needs to be replaced.
Between these two, I plan to add a completely new beam for extra support.
In the pictures I attach, you can see both the temporary supporting inner wall and the actual damage. The shorter stud visible in picture 2 has no purpose at all, it was probably placed there when the previous owner laid new flooring on the upper floor.
Thanks in advance for tips, tricks, and good advice.
I need to splice two beams in the floor structure that have rotted near the outer wall.
Now I'm considering which splicing method to use, the nailed one according to the Träguiden (http://www.traguiden.se/TGtemplates/...lt.aspx?id=822) or with carriage bolts? What is most common and best?
What dimension of bolt or threaded rod should one use? I'm not finding any information about this online.
The beams are in the dimension 4x9". It's only about 50 cm that needs to be replaced.
Between these two, I plan to add a completely new beam for extra support.
In the pictures I attach, you can see both the temporary supporting inner wall and the actual damage. The shorter stud visible in picture 2 has no purpose at all, it was probably placed there when the previous owner laid new flooring on the upper floor.
Thanks in advance for tips, tricks, and good advice.
Nailing works excellently.
Place 2"x9" on each side of the damaged section.
They should extend at least one meter beyond the damage.
Then nail with 5" or 6" nails.
However, I don't think there are carriage bolts long enough??
Threaded rod works, but with both threaded rods and carriage bolts, you have to drill.
I would have nailed!
Place 2"x9" on each side of the damaged section.
They should extend at least one meter beyond the damage.
Then nail with 5" or 6" nails.
However, I don't think there are carriage bolts long enough??
Threaded rod works, but with both threaded rods and carriage bolts, you have to drill.
I would have nailed!
Thanks for the response!
I wrote the wrong dimension for the beam, I see, the correct one is 3"x9" (approximately 76*228)
With 3"x9" the thickness will be 7" or almost 178 cm.
A 6-inch nail should be used so that the nail cuts well on the other side.
Should I nail with the pattern that the wood guide recommends with 3+1+3 (1 in the middle and three on each edge with distances 40-70-40). This is calculated on a resting joint with a 50 cm scarf. With 1 meter, I'm considering a tighter cross pattern?
I wrote the wrong dimension for the beam, I see, the correct one is 3"x9" (approximately 76*228)
With 3"x9" the thickness will be 7" or almost 178 cm.
A 6-inch nail should be used so that the nail cuts well on the other side.
Should I nail with the pattern that the wood guide recommends with 3+1+3 (1 in the middle and three on each edge with distances 40-70-40). This is calculated on a resting joint with a 50 cm scarf. With 1 meter, I'm considering a tighter cross pattern?
You should nail partly at the beginning of the scarf and partly at the end. In the longitudinal direction, that is.
Nails you place in the middle bear almost no load.
Nails you place in the middle bear almost no load.
Yes, wood screws are all well and good, but the old beams are made of heartwood and basically refuse to take screws. Both torx and Phillips screws break...
Should be French screws then with a ring spanner, but I think those create too many deformation zones in the wood.
What about a belt and braces?
6" nails 3+3 on each side AND 2 carriage bolts on both sides of the splice?
Should be French screws then with a ring spanner, but I think those create too many deformation zones in the wood.
What about a belt and braces?
6" nails 3+3 on each side AND 2 carriage bolts on both sides of the splice?
It will probably hold up fine, but if you have wood that's so hard you can't screw into it, you probably won't be able to drive a single nail straight...
I would guess your screw problems are more due to a weak screwdriver, bad/wrong screws, or bad bits!
I've personally used Biltema's long screws in my rock-hard 3" walls from 1936 directly into knots, and with a screwdriver that drives 52nm, it's like driving into butter^_^b
I would guess your screw problems are more due to a weak screwdriver, bad/wrong screws, or bad bits!
I've personally used Biltema's long screws in my rock-hard 3" walls from 1936 directly into knots, and with a screwdriver that drives 52nm, it's like driving into butter^_^b