HomeMy WebLinkAbout4721 DUSTY SAGE LOOP - SPECIAL INSPECTIONS - 4/1/2004 (3)t k
April 01, 2004
Project No: 1090-24-02
Rutt Construct, Inc.
P.M.B. 344
1001 A East Harmony Road
Ft. Collins, Colorado 80525-3354
Re: Lots 110 - 113, Harmony Ridge P.U.D.; Fort Collins, Colorado
4721 Dusty Sage Loop
Dear Mr. Rutt,
Shear Engineering Corporation conducted foundation excavation observations for the above
referenced address on Thursday, February 26, 2004, and Friday, February 27, 2004. The soils
noted at the bottom of the upper garage footing excavation consist primarily of silty, sandy clay.
The soils noted at the bottom of the basement excavation consist primarily of sand and gravel.
The soils noted at the bottom of the walkout excavation consist of engineered fill material. Earth
Engineering Consultants provided compaction testing of this material during site work fill
placement operations. Copies of these compaction test results (EEC project number 1044010;
report dated March 11, 2004) are attached for your reference.
It is noted that the geotechnical investigation report for Harmony Ridge P.U.D. was prepared
prior to subdivision fill placement. Earth Engineering Consultants noted the soil conditions
below the fill material in their geotechnical investigation report for Harmony Ridge P.U.D. titled
"Subsurface Exploration Report, Harmony Ridge P.U.D., Fort Collins, Colorado"; EEC project
number 1972027; report dated May 5, 1997.
Boring Logs B-9 and B-12 were the nearest borings taken to this site. Boring Log B-9 indicated
sandy, silty, lean clay to a depth of one foot (1), underlain by sand with gravel to a depth of nine
and one half feet (9.5'), underlain by sand and gravel to a depth of ten feet (10% underlain by
highly weathered claystone to a depth of twenty-one feet (21), the bottom of the boring. Boring
Log B-12 indicated silty clay with gravel to a depth of two feet (T), underlain by silty, clayey
sand to a depth of nine feet (9% underlain by sand to a depth of fifteen feet (15), underlain by
highly weathered claystone to a depth of twenty-one feet (21'), the bottom of the boring.
This lot is suitable for a spread footing foundation system as recommended in the geotechnical
investigation report. The foundation plan for the proposed residence prepared by Shear
Engineering Corporation, dated August 2003, was used. Footings were designed for a maximum
allowable bearing capacity of2,500 pounds per square foot (dead load plus full live load) and a
minimum dead load of 500 pounds per square foot according to the recommendations of the
geotechnical investigation report noted.
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4836 S. College, Suite 12 Ft. Collins, CO 80525 (970) 226-5334 Fax (970) 282-0311 wwwshearengincering.corn
April N, 2004
Project No: 1090-24-02
Re: Lot 110 -113, Harmony Ridge P.U.D.; Fort Collins, Colorado
4721 Dusty Sage Loop*
Shear Engineering Corporation was present on Friday, February 27, 2004, and Monday, March
1, 2004, in order to conduct footing formwork and reinforcing observations. Shear Engineering
Corporation was present on Monday, March 8, 2004, and Thursday, March 11, 2004, for
foundation wall reinforcing observations.
Footing formwork and reinforcing were installed in substantial conformance to the foundation
plan. Foundation wall reinforcing was installed in substantial conformance to the foundation
plan.
Shear Engineering Corporation was present on Tuesday, March 23, 2004, for a perimeter drain
installation and foundation wail dampproofing observation.
The perimeter drain installation was completed in substantial conformance to the notes and
details shown on the foundation plan.
Dampproofing (DECO 20) was applied to the exterior face of concrete basement walls that retain
earth and enclose habitable space. The dampproofing was applied from the top of the footing to
the assumed finished grade elevation.
Groundwater was not evident in the basement excavation. Waterproofing is not required. A
foundation drain system is required. A sump pit, located in the basement, is recommended as a
secondary drain outfall.
If you have any questions concerning our observations, please call us at (970) 226-5334.
Sincerely, Reviewed by,
KIV04- 31$82
Richard D. Wagstaff Jim Hin en, P.E.
Shear Engineering Corporation Shear Engineering Corporation
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