×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Support for house addition

Support for house addition

Support for house addition

(OP)
I am building an addition on to my house with concrete piles for support. Can anyone tell me what the maximum spacing is for a 2" x 10" floor joist

RE: Support for house addition

A Structural Engineer.  Hire one.

RE: Support for house addition

Or an architect.

If you hire a PE or LA familiar with residential construction, they'll be able to guide you around many pitfalls. Depending on where you live, it could quite possibly be required to get your building permit.

------------------------------------------
     "...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail."

              Wm. Phelps Eno, ca. 1928

RE: Support for house addition

kruzie,
Over the long haul, building without an Architect or an Engineer will cost you a lot of extra time and money. I hope that you don't learn this the hard way.
Best regards,
 

-Mike
www.sewellconstruction.org

RE: Support for house addition

The answer depends on what species of wood you are using and the grade. Where I live, we use southern yellow pine and if you consult the Southern Pine Council webpage(www.southernpine.com), assuming a floor live load of 30 psf, 10 psf dead load and using a No. 3 grade, and a spacing of 16in O.C., the maximum length you would want to use is 12'-2". The Southern Pine Council design tables tend to be conservative, so I would round that up to 13 feet.

If you are using a different species of wood, consult your local lumber yard or Home Improvement store. they often have tables for the species of wood they sell and its applications.

RE: Support for house addition

It depends on what you are trying to accomplish. If you want to tile the floor or put hardwood down, the tile industry as well as the wood flooring industry recommend 16" spacing with a 3/4" tongue and groove sturdifloor plywood.

If you want a less expensive option, you can cut some corners and go to 24" spacing and expect some floor shaking.

RE: Support for house addition

If you are in Canada look it up in Part 9 of the Building Code.

Are you really a civil engineer?

Rick Kitson MBA P.Eng

Construction Project Management
From conception to completion
www.kitsonengineering.com

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources