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About Ed Eckley
Expertise
I will be happy to answer any questions regarding foundation problems of any type. Questions pertaining to construction methods, Problematic soils, Settling & Movement, Frame torsion & racking, Preventative measures, Repair methods of all types.
Experience
Over 18 years in the industry. A.S.M.E. Certified,(American Society of Mechanical Engineering). Hydraulics Design Expert. 18 years of hands on soil manipulation. Over 500 homes repaired, and over 20 commercial buildings repaired. Extensive soil knowledge. Familiar with most types of repair methods and the expected results of each.
Publications
Ezine.com Article Title: Foundation Problems Do's & Don'ts
custombuildingsupport.com: Foundation Repair Methods
Education/Credentials
High School Graduate 1976
Trade School Graduate 1976
College Graduate 1978
Awards and Honors
Certificates of achievment: Excel Industries
Letters of appreciation: City of Golden
Awards & Plaques: Jacobsen Turf Division
Past/Present Clients
Available on request
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You are here: Experts > Home/Garden > Home Improvement/Repair > Foundation Stabilization and Repair > Mono slab perimitr raise
Expert: Ed Eckley - 11/5/2009
Question
I have 45 ft outside wall needs 1/2 to 11/2 inch raise.Dug under footing poured 2 ft sq 4 inches deep.Plan to use 20 ton hydro jack to raise.What can I do for a bigger foot for foundation OR WHAT DO yOU SUGGEST FOR PROJECT..cANT Find any suppliers for help.Thought I could buy like a concrete cone'jack it down to a solid soil fill with solid blocks then concrete in.I have done this before.thanks
Answer
Hello Dennis
I suggest installation of helical or hydraulic pressed piers to a verified depth resistance that will insure a permanent hold.
I have seen many repairs performed in the same basic manor that you have described, and it can only be considered a short term fix unless you can absolutely control the groundwater that is causing the softening in the upper soil layers.
If you are working with a sandy, gravel type of soil, then you may be in good shape with the installation of perimeter stabilizing blocks to a depth of perhaps 36", (each supportive pad being at least 24" X 24"), with rigid columns, (either concrete or steel), at a spacing of 5ft apart, (along the affected area). If the structure is more than single story, then you may need lateral support spanning between each column, (steel rim beam or girder). This would be needed to properly support the original slab edge uniformly.
If the slab has sunk because of a particular flood incident, and the soil has now dried and the perimeter grade is shaped properly. then you may be able to have the foundation slab jacked by a reputable mud jacking contractor. The 1/2" - 1-1/2" that you are mentioning, should not be difficult to recover.
I wish you the best!
Respectfully Ed Eckley
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