×
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

Footing details

Footing details

Footing details

(OP)
I'm building a purgola (some people call it an arbor) in my backyard and I'm in need of standard footing details for a four post pillar.  Each post is a 4x4 (douglass fir no.1).  I'm grouping four of these per corner to support the 24' long 4x12 beams.  Does anyone know were I can obtain detailed drawings that illustrates how to correctly anchor support posts into concrete for an outdoor structure?

RE: Footing details

Visit Simpson Strongtie online at www.strongtie.com and look up column/post bases.

RE: Footing details

Find your load at each post

Assume a soil capacity of 1500 psf unless you know better.

Size the footing (round or square) to meet this

Dig down below the frost line (call local Code authorities for that info)

And then go to Simpson (as suggested) to get anchor details

The Simpson anchor will carry no moment - so figure out some kind of lateral bracing.

Don't forget to check wind uplift.  

Good Luck and have fun.

RE: Footing details

(OP)

Thanks Mike,

CB44 is the post base suggested.  Are you suggesting some sort of gusseting at the top of my post connection for lateral bracing?

~Ruben

RE: Footing details

Yes you need some sort of rigid connection where the posts meet the beams.

A lot of these structures end up pretty rickety because no-one makes the joints rigid enough. My uncle's is currently being stabilised by a grapevine. Another one at my friend's farm has a lean that increases about an inch a year.

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