Question On House With No Joists - Flooring - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Flooring

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 07-20-2015, 03:20 AM   #1
Newbie
 
Join Date: Jul 2015
Posts: 3
Rewards Points: 6
Question

Question on House with no joists


Hi,

Im new to this forum and had a question regarding a subfloor on a house from the 1940s in Los Angeles. As I was removing a decayed subfloor, I discovered that the house has not joists. The only thing that is supporting the house is a raised concrete foundation and girders that run approximately four feet apart and right on top of them is the subfloor that rests on top of the sill plate. The subfloor was a 1 1/2 inch tongue and groove 2 by 6 pine planks. I was planning on having two layers 3/4 inch sheets of plywood to replace the subfloor. I have two questions:
1) Will this be enough to provide proper support for the marble tile that i will install or will i have to re-inforce it?(There is a four foot span between the girders and no joists)
2) Because i can't add joists like conventional houses ,can i nail joists on the side face of the girders using simpson fasteners to provide more support and does this violate building codes?
Any advice would be appreciated.
Thanks for reading

Advertisement

elnino_ela is offline   Reply With Quote
Old 07-20-2015, 09:57 AM   #2
Member
 
Join Date: Mar 2007
Location: Long Island, NY
Posts: 10,373
Rewards Points: 3,706
Default

Question on House with no joists


If you connect the girders with a lateral joist system, that will give you enough support for marble tile as long as the girders are properly supported along their length.
How large are the girders and how far apart are they supported?

Advertisement

__________________
Ron
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."
B. Franklin 1759
Ron6519 is online now   Reply With Quote
Old 07-20-2015, 12:54 PM   #3
Newbie
 
Join Date: Jul 2015
Posts: 3
Rewards Points: 6
Wink

Question on House with no joists


Hi,

The girders are supported about every six feet apart with posts and they are 4 by 6 inches in thickness. I will add pictures soon . Thanks!
elnino_ela is offline   Reply With Quote
The Following User Says Thank You to elnino_ela For This Useful Post:
oh'mike (07-20-2015)
Old 07-28-2015, 02:58 AM   #4
Newbie
 
Join Date: Jul 2015
Posts: 3
Rewards Points: 6
Question

Question on House with no joists


Hi, I wanted to know how i could attach joists to reinforce a subfloor. This is a house from the 1940's and used to have 1 1/2 inch tongue and groove subfloor. The problem is that it only had 2 joists and a huge 48 inch span from a girder to the outside foundation and no support. I removed all of the rotted wood, and i now want to add joists. Here is the problem. The house does not have a rim joist to attach the joists. I attached a photo below. The only solution i might be able to use is to use a simpson top flange joist hanger and nail it to the sill plate. I plan on adding these every 16 inches and connect these joists to a perpendicular beam 48 inches away. What would be a reasonable solution to this problem?
Attached Thumbnails
Question on House with no joists-question.jpg  
elnino_ela is offline   Reply With Quote
Reply

Tags
flooring , joists


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New roof on house and question about venting? imola ghost Roofing/Siding 15 07-06-2014 11:10 PM
Attatch addition joists to house + gable overhang fyrman Building & Construction 3 06-27-2014 07:53 AM
Question on painting floor joists marriedmanw Painting 11 05-07-2014 08:01 AM
Replacing rim joists in brick house sylverfoxx Building & Construction 5 05-06-2009 08:07 PM
Deck Building Question - Installing Ledger Board to Rim Joists Ler0y Jenkins General DIY Discussions 20 05-18-2008 11:05 AM




Top of Page | View New Posts