Floor Joist Spans
#1
Member
Thread Starter
Join Date: Jan 2008
Posts: 1
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Floor Joist Spans
I am doing a total remodel of a 100+ year old house. This includes some new walls, and replacing or redoing all of the floors. This will be a rental when I am done, so I am trying to keep my costs down. That is why I am posting this question.
What can each of these joists safely span?
2"x8"?
2"x10"?
2"x12"?
What would you use for a 8' span if it will be under a bathroom?
What can each of these joists safely span?
2"x8"?
2"x10"?
2"x12"?
What would you use for a 8' span if it will be under a bathroom?
#3
Member
Join Date: Sep 2004
Posts: 154
Upvotes: 0
Received 0 Upvotes
on
0 Posts
You are only talking a little difference in price. I would go with larger rather than smaller, and I would go 12" centers if possible. That way, the extra load of a filled tub, tile, etc. can be carried. If it was just a regular room, a 2x8 would probably be fine.
#4
joist selection
I am doing a total remodel of a 100+ year old house. This includes some new walls, and replacing or redoing all of the floors. This will be a rental when I am done, so I am trying to keep my costs down. That is why I am posting this question.
What can each of these joists safely span?
2"x8"?
2"x10"?
2"x12"?
What would you use for a 8' span if it will be under a bathroom?
What can each of these joists safely span?
2"x8"?
2"x10"?
2"x12"?
What would you use for a 8' span if it will be under a bathroom?
#5
Member
Join Date: Feb 2005
Posts: 53
Upvotes: 0
Received 0 Upvotes
on
0 Posts
the American wood council has a VERY handy dandy span calculator found here:
http://www.awc.org/calculators/span/...rcalcstyle.asp
No. 2 grade Southern Pine is a good start for species and grade. code minimum deflection is typically L/360, but i would reccomend L/480. You should use 40 psf live load and 10 psf dead load for standard residential construction.
http://www.awc.org/calculators/span/...rcalcstyle.asp
No. 2 grade Southern Pine is a good start for species and grade. code minimum deflection is typically L/360, but i would reccomend L/480. You should use 40 psf live load and 10 psf dead load for standard residential construction.