×
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

Wing insulation in regards to depth

Wing insulation in regards to depth

Wing insulation in regards to depth

(OP)
Hello
I'm designing sole foundations for a heated building where the anticipated frost depth is only marginally above the foundation depth. Foundation depth is 900 mm and frost depth is 800 mm.

I'm wondering if there's need for wing insulation (both considering frost heaving and heat transfer), and more than that if there's any documentation of the correlation between foundation depth and dimensions of wing insulation.

If anyone can help, thanks in advance!

RE: Wing insulation in regards to depth

I'd say no need for wing insulation.

Practical examples I know of, the standard design practice in Anchorage and Fairbanks,  Alaska is to provide only 2" board insulation on the foundation wall, no wing insulattion. Design depth to bottom of footing is 42 inches.  Design frost depth is 10 feet in Anchorage and over 12 feet in Fairbanks.

The insulation helps direct building heatdown below footings, maintaining the ground continuously thawwed underbuildings.

If less than 42" depth of footing is provided (which is allowed), then wing insulation is used.

Search for "frost protected shallow foundations" for design guides.

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