I would like to lower a basement foundation on a house I am renovating. Lowering it 2′ would be ideal.
Current conditions are: Concrete foundation. Preliminary dig showed that the bottom of the foundation is about 12″ below existing slab. There is no footing. I don’t believe the walls are more then 8″ thick. Over all the foundation seems to be in tact. The foundation does have a few diagonal cracks in it. I believe the cracks have been there for some time. They don’t seem to be exceptionally wide and the plaster upstairs does not seem to have diagonal cracking. Once the underpinning is done I intend on adding 1 1/2 stories to the existing bungalow.
Now that you have picture of my intentions and existing circumstances. What are your suggestions for underpinning the foundation. I have an idea on how to do it. I am looking for someone with experience to give me a method for going about it and or an elevation of it if you have one.
I have to make sure that once I do it properly that the new foundation underpin could take the weight I am going to put on it with addition and such. I will be picking up some load on a center beam and new columns in the basement. So the new construction above wont all be resting on the outside foundation.
Thanks a bunch in advance guys!
Replies
A bit out of my league, but welcome to Breaktime.
Since you're asking questions that involve footing depths, it would be helpful to others to know what part of the world you're in.
The member profile is a great way to convey this type of info.
Regards
The best reward for a job well done is the opportunity to do another.
Please do a search under this topic.
Pino just asked this question a few days ago and got a lot of good advice ....
Quality repairs for your home.
AaronR Construction
Vancouver, Canada
I did a search for underpinning a foundation and got no results. Do you remember what the question was so I could do a search?
Try these...http://tinyurl.com/2ml6dfhttp://tinyurl.com/2uqudaWhen searching, make sure you are using the "Advanced Search" in the upper left of the screenAnd welcome to BT'Man who say it cannot be done should not interrupt man doing it' ~ Chinese proverb
thanks.
Not exactly what you referred to, but close enough
msg=102304.42Quality repairs for your home.
AaronR ConstructionVancouver, Canada
I've done (and still am doing) something similar. It's discussed in message #73774.1