Foundation Footings

Recommended Posts

I think what you are asking is not for how far below grade the footing needs to be but what size do you need to support the foundation and walls above if that is the case do what Michael said and contact a structural engineer because the loads will vary, I am fortunate to have my son as a structural engineer 

Link to comment
Share on other sites

  • 1 month later...

I just joined the ICC (

I bought the 2018 IRC (binder & loose leaf) and the online subscription to 2015 IRC for a year.  If you have building questions, these are the folks that manage the International Code books.  Many cities, counties, and states often add supplemental code requirements to address local building conditions.  Like here my footings need to be only 12" below grade.  Some colder places typically include a basement under the house, since the footings have to go so deep anyway.


It's nice having the online access, I strongly recommend checking this option out.


Link to comment
Share on other sites

  • 4 months later...

You absolutely need to hire an Engineer or an Architect - and maybe a Soils Engineer.  The loads applied by the structure can easily exceed the basic soil bearing capacity.   There are many things that have to be analyzed and there just isn't a simple answer to your question without knowing exactly what the structure is.

  • Upvote 1
Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

  • Member Statistics

    Total Members
    Most Online
    Newest Member
  • Similar Content

    • By KimJansen
      Dear CHIEFERS, can someone please advise me on how to create new foundations that will then be the default foundations - as shown in attached image.

    • By DeLayDesign
      This has been an issue for me for years.  When creating a "pony wall" for a split level, I need to align the exterior OSB with the exterior of the concrete foundation below it.  The only way I can accomplish something that works is to move the OSB to the 'main layer' but by doing this Chief makes me 'build platform to exterior of layer 'OSB'', which is not accurate.  I've tried using the foundation offset option to no avail, and I really want to get this right.  

      Any suggestions?

    • By JasonMWebb
      Is there a way to generate the vertical cell reinforcement objects in a CMU foundation plan? I am looking for something along the lines of what is in this diagram (from another system). It is a common requirement for foundations. Please refer to the small squares grouped at the corners of the foundation drawing attached. Note that I am using Chief Architect Premier X12 (latest build).

      The detail drawing for this object would look similar to this:

    • By Ravenquills
      Hi everyone:
      I am having an issue with a split level. I am using Chief X11.
      The plan i posted does not have foundations since when i add those things get really weird and I think I need to sort out the issue with the levels first or the foundation will never build right. I have a room that is going to be garage however no matter how i define it the door from that room into the main house is above the level of the ceiling. see attached photo. I have also attached the plan. The exterior walls are a sip wall customized according to the manufactures specifications with a layer for the furred interior walls. The total thickness on those walls is 10 5/8" The interior wall is a customized interior wall that is load bearing for use in certain areas of the design.
      6242019 RFH (Shell2).plan

    • By mfmclelland
      OK, I designed a plan using Home Designer Pro. I then decided to bite the bullet and get the full CAP program so that I would have more options available. We opened the plan in CAP and most things seemed to be OK. Our lot slopes towards the front so we needed to step the foundation at the garage to lower it and get the house up so there would be less cutting of grade. I tried several ways of stepping the foundation but it always gave me weird problems. So I decided to start over fresh in CAP and see if the issues were coming from the Home Designer Pro Version. Now as I have started I have tried to do things in sequence and not get ahead of myself. The problem occurs where I am trying to step the foundation. It looks fine on the front elevation but when I take a camera shot from inside the garage I get these weird triangle things happening. I am including a set of the plans since right now they are small since I am just starting over. If you take some shots from the interior of  the garage from the back to the front corner by the porch,you'll see what I mean. I have also included an export of that shot. I want to step the foundation where the garage and the storage under the porch intersect. Everything I try gives me issues. Can anyone point me in the right direction? Thanks in advance if you can.

      Olympic Lane Final.plan