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floor joist spacing and size

9.5K views 35 replies 8 participants last post by  ProWallGuy  
#1 ·
My brother just bought a house that was built in the late 1800s and is compleetly remodeling it. The second story floor joist were sagging about 3 inches in the center of a 14'x18' room and the inspector told him he would have to install 2x10s on 8 inch centers. I'm thinking this is a little overkill but this isn't my line of work so I wanted to ask others who might know. What is the typical size limber used for this span(14') and what spacing is used. There is going to be a bathroom on this floor if that makes a difference.

I'm just a remodeler (flooring, painting, some finish work, exc.) so This is a little out of my league but I would think 2x10s on 12" or 2x12s on 16" centers would be plenty.
 
#28 ·
Steve, this won't go any farther because I have decided this site has, for some reason, attracted too many semi-trained construction workers with chips on their shoulders and few of them are willing to learn anything or show respect for anyone who dares to teach them. The lack of moderation doesn't help much either although sites like the JLC can sometimes be over moderated. I usually post there by private message when someone needs help badly enough. I have greatly enjoyed your posts and respect my old friends Rich (hatchet) and Cole. I deal with them on a regular basis on another forum under another name where people have been very appreciative of my input. I came here because the other site was down but it's up now so it's time to sign off. This is Mighty Anvil OUT.
 
#29 ·
mighty anvil said:
Steve, this won't go any farther because I have decided this site has, for some reason, attracted too many semi-trained construction workers with chips on their shoulders and few of them are willing to learn anything or show respect for anyone who dares to teach them. The lack of moderation doesn't help much either although sites like the JLC can sometimes be over moderated. I usually post there by private message when someone needs help badly enough. I have greatly enjoyed your posts and respect my old friends Rich (hatchet) and Cole. I deal with them on a regular basis on another forum under another name where people have been very appreciative of my input. I came here because the other site was down but it's up now so it's time to sign off. This is Mighty Anvil OUT.

Ouch that is why I just started back up and am already booked. :cheesygri
 
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#30 ·
JustaFramer said:
How ever over 13' 7" I believe for No.2 or better is 12" on center. Select lumber you probably could go 16" on center.

Try google for the code books but expext to pay around seventy dollars. Make sure he gets the ICBO book.
For the record, and for anyone who might have been misled by the above statements or anyone who might care to know the facts of the matter:

• It is not necessary to use 12” o.c. spacing to span more than 13-7. The proposed 16” o.c. framing is allowed to span 16-10.

• For a stiffer floor (L/480) a span of 15-3 is allowed.

• ICBO publishes the Uniform Building Code which is used on the West. Until recently Georgia used the Standard Building Code from SBCCI.

• The appropriate building code for Macon, Georgia is the 2003 Georgia Residential Code which is based on the 2000 International Residential Code (IRC)

Fire7882, if you’re still out there somewhere, there is nothing wrong with your framing proposal. The building inspector was assuming the span was 18 ft, or assuming 2x8’s, or intentionally giving you a hard time.
 
#33 · (Edited)
mighty anvil said:
Why would you advise someone in Georgia to get the Uniform Building Code published by ICBO?

We don't use the UBC. I didn't tell him to get a UBC considering the International Counsel of Builders publish's IRC 2000/2003, IBC 2003 ,UBC 97 Maybe I should of been more clear but if you get UBC out of buy a book publish by ICBO then you must be delusional.

And to clear it up one more time UBC is damn near obsolete it has been revised to be more like IBC or IRC.

At least around here I think that is why they completely crossed over. I remember is '02 a building inspector was telling me he had been talking classes with other BI's to complete the cross over in JAN 04.
 
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#35 ·
You are confused.

The International Council of Building Officials (ICBO) publishes the Uniform Building Code (UBC).

The International Residential Code (IRC) is published by the International Code Council (ICC).

You gave the original poster incorrect information about his framing question and incorrect information about the code he needed to buy, but instead of criticizing you, I told him what he needed to know. Then you decided to harass me. If this were a moderated forum you would have been thrown off by now.
 
#36 ·
mighty anvil said:
If this were a moderated forum you would have been thrown off by now.
This is a moderated forum. I usually just need to look out for spammers, or posts in the wrong forum.

I think its sad to watch two grown men (professionals?) argue on the net. Hell, the thread was over 5 months old when you 2 chimed in.

Since this thread is going nowhere fast, and you wanted moderation, you got it.

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