HomeMy WebLinkAbout818 Peterson St - Special Inspections/Engineering - 11/20/1991Empire Laboratories, Inc.
GEOTECHNICAL ENGINEERING & MATERIALS TESTING
November 20, 1991
Mr. Tom Johnston
818 Peterson Street
Fort Collins, Colorado 80524
Re: Addition to Residence
818 Peterson Street
Fort Collins, Colorado
ELI Project No. 9098-91
Dear Mr. Johnston:
CORPORATE OFFICE
P.O. Box 503 • 301 No. Howes
Fort Collins, Colorado 80522
(303) 484-0359
FAX No. (303) 484-0454
As requested, an engineer from Empire Laboratories, Inc. has sized the
footings for the proposed addition at the above -referenced location. It is
our understanding the addition is to have 26' side walls and 24' end
walls. One end wall- is to be constructed adjacent to the existing
crawl -space foundation wall. The new foundation walls are to be a
maximum of 5' tall with the lower level being a garden -level area. The
26' long side walls support two floors and a roof with a beam near the
center of the structure supporting two levels of floor. A pad will be
located near the center span of the beam.
Based upon the imposed loads and the assumed soil conditions, it is
recommended the 26' side walls be provided with an 8"x20" concrete
footing and the end walls be constructed with an 8"x12" concrete footing.
A typical section of the exterior foundation wall is included with this
letter. It is recommended the interior pad be a 4211x42"x10" concrete pad
reinforced with four #4 reinforcing bars each way 3" from the bottom of
the pad. Adequate support or shoring of the existing foundation wall
adjacent to the new wall should be provided during construction to
prevent damage to the existing wall. A foundation excavation observation
shall be performed by Empire Laboratories, Inc. prior to concrete
placement to verify the soil conditions encountered at the site are similar
to those used in the design of this foundation.
If you have any questions, please contact us.
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Very truly yours,,
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Ni R L B RATORIES, INC. � e ���'
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Branch Offices
P.O. Box 16859 P.O. Box 1135 P.O. Box 1744
Colorado Springs, CO 80935 Longmont, CO 80502 Greeley, CO 80632
(719)597-2116 (303)776-3921 (303)351-0460
Member of Consulting Engineers Council
P.O. Box 5659
Cheyenne, WY 82003
(307)632-9224