advisable distance between floor joists

hugo_inside · Post by **hugo_inside** » Thu Jan 13, 2005 2:42 am

whats the advisable distance between floor joists?? how many studs I must fix between joist, the more the better?? Room sizes are 3 x 5 meters.

Is correct to use 2 plies of particle board of 16 mm on this joists? only 1 ply is enough¿?

knightfly · Post by **knightfly** » Thu Jan 13, 2005 9:25 pm

400mm is better than 600mm, makes the floor stiffer - if you don't want a boomy floor, I would stay with two layers of the thicker OSB, fill the floor cavities snugly with rockwool, and if it's a damp location put 0.18mm plastic over the frame and rockwool before putting the OSB on - offset all joints between the two layers, and rotate the second layer to run at 90 degrees to the first.

Not sure which "studs" you're talking about?? Steve

Davy Crow · Post by **Davy Crow** » Sun Jan 16, 2005 3:52 am

maybe he means dwangs...?

knightfly · Post by **knightfly** » Sun Jan 16, 2005 3:59 am

Davy, ya got me on that one - hopefully this

http://www.buildeazy.com/glossary/dwang.html

is what you meant, and not the kinky sexual stuff I found on google

Steve

hugo_inside · Post by **hugo_inside** » Sun Jan 16, 2005 4:25 am

I want to say pieces between joists for strength the structure. But I find that could be at the end of the joists, or other joist to close the square structure...

knightfly · Post by **knightfly** » Fri Jan 21, 2005 12:15 pm

Finally got some time -

The long joist that ALL other joists fasten to, is called a Rim joist - the cross pieces that keep joists from twisting are usually called Blocking - in upper floor/ceiling frames where it's possible to get at framing from below, these can be replaced with "X" braces. If you're using insulation that comes in 4 foot lengths, this is a good spacing for blocks too... Steve

Davy Crow · Post by **Davy Crow** » Thu Jul 07, 2005 4:31 am

knightfly wrote:Davy, ya got me on that one - hopefully this

http://www.buildeazy.com/glossary/dwang.html

is what you meant, and not the kinky sexual stuff I found on google Steve

indeed:

Dwang - Nogging.

A short piece of lumber set between two studs, joists, rafters or purlins to keep them rigid.

never knew there was anything perverse about 'dwanging out' a ceiling