HomeMy WebLinkAboutRe: site visit J.H. Dahlmeier Engineering Inc.
August 12, 1998
Kenton and Diane Carlson
3498 North Shore Drive
Orono, NIN 55391
R�: Storm Damage
Residence
3498 North Shore Drive
Orono, MN
Commission No. 98095
Dear Mr. & Mrs. Carlson:
The purpose of this letter is to report the findings of a site visit and construction review of your
residence.
OBSERVATIONS AND COMMENTS
l. At the request of your contractor, Tom Betz, and the City of Orono Building Inspections
Department, a site visit was conducted to review foundation conditions on July 30, 1998.
2. At the time of the site visit, the south wing of the home (two-story portion) was
completely demolished with the first-floor framing cap removed. The foundation walls
were exposed and several test pits dug to footing depth.
3. The following observations were macie with respect to the foundation:
' a. The foundation is concrete masonry. The top block is filled with concrete. The top
two courses are misaligned, chipped and broken.
b. At the test pits, the bottom of the footing is at least 42" below grade. The footing was
poured without the benefit of forms and about 14" wide at bearing. Soil for footing
bearing is sand.
4. A load tabulation indicates that the soil pressure at the footing level would be
approximately 2,000 psf.
2434 Commerce Boulevard • Mound, MN 55364 • (612) 472-4746 • FAx (612) 472-4761
- . Kenton& Diane Carlson
August 12, 1998
Page 2 of 2
5. The sand material is capable of supporting this load. Settlement that occurs while loading
soils will have occurred following original construction.
6. Although the footing foundation system is not ideal, the settlement issue outweighs the
value of replacement since the footing foundation system does meet Code with respect to
frost protection and soil bearing capacity. '
7. It is my understanding that the contractor will accomplish the following:
a. Remove the top two courses of the existing foundation.
b. Install vertical dowels 2 feet O.C. into existing foundation and extending above
the foundation.
c. Place concrete wall cap to proper height, level, and true with two #4 continuous
with anchor bolts set at proper spacing.
PROFESSIONAL OPINION
8. It is my professional engineering opinion that based on the above information and site
visit, the footing foundation system will be structurally adequate as constructed with
adequate soil bearing capacity.
If you have any questions,please contact me.
Sincerely,
J. . D L EIER ENGINEERING,INC.
Jo . Dahlmeier, P.E.
JHD:Im
Cc: City of Orono
� Tom Betz/Betz Builders
I hereby certify that this plan, specification or report was
prepared by me or under my direct supervision and that I
am a duly registered professional engineer under the laws
of the State of innesota.
Mi sota Registration No. 9212