Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations 3DDave on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

concrete columns for commercial signs

Status
Not open for further replies.

nar

Electrical
Jul 18, 2001
1
my customer wants to build a concrete/brick column which will be subjected to wind load. I always suggest having rebar inside or a steel pipe inside for support and thses are direct buried in concrete. his column is 15" square and 7 high and wants to use 2 x 4s (8 of them) istead of rebar or pipe. is there a problem with this? is my way better?
 
Replies continue below

Recommended for you

What does your structural engineer suggest? Depends on the wind area, sign size and height, soil conditions, etc.

Embedding wood 2x4's in concrete isn't a good idea.

Check out Eng-Tips Forum's Policies here:
faq731-376
 
Wood is too flexible to be an effective structural support for concrete or masonry. The only thing a 2x4 will do in a concrete/brick column is give you something handy to screw into for attaching stuff. Later, when it rots away, it leaves a nice duct. [wink]
 
Use 4 steel 4"x4" tubes.
Wood won't provide either the needed strength or stiffness.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
 
Many years ago I used to work for a sign company.
At that time the accepted practice was to put up a properly rated load bearing tube, then build a veneer around it to hide if required.
B.E.

You are judged not by what you know, but by what you can do.
 
EdStainless

I agree about wood not being appropriate but the OP didn’t designate how large or how tall their sign was. So four 4x4 tubes may not even be close to working.

Best not to provide design solutions when you don’t have all ( or in this case any) of the design parameters.

Check out Eng-Tips Forum's Policies here:
faq731-376
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor