HomeMy WebLinkAbout815 Apex Dr - Special Inspections/Engineering - 08/07/2003August 7, 2003
Project No: 1555-02-00
Anchor Development Corporation
1338 Catalpa Drive
Ft. Collins, Colorado 80521
Attn: Russ Wells
Re: Lots 28 - 31, Pinnacle Townhomes P.D.P.; Fort Collins, Colorado
815 Apex Drive --t-r 6
Dear Mr. Wells,
Shear Engineering Corporation conducted foundation excavation observations for the above
referenced address on Wednesday, July 16, 2003 and Thursday, July 17, 2003. The soils noted at
the bottom of the basement excavation consisted primarily of silty, clayey sand with gravel. The
soils noted at the bottom of the garage footing excavation also consisted primarily of silty, clayey
sand with gravel.
It is noted that the geotechnical investigation report for Pinnacle Townhomes P.D.P. was
prepared prior to subdivision fill placement. The soil conditions below the fill material were
noted by Terracon in their geotechnical investigation report for Pinnacle Townhomes P.D.P.
titled "Geotechnical Engineering Report, Proposed Pinnacle Townhomes, South of Prospect
Road, North of Spring Creek and West of Lemay Avenue, Fort Collins, Colorado"; Terracon
Project No. 20015202; report dated October 10, 2001. Boring Logs No. 3 and No. 4 were the
nearest borings taken to this site. Boring Log No. 3 indicated sandy, lean clay with trace gravel
to a depth of four feet (4% underlain by silty, clayey sand with trace gravel to a depth of six feet
(6'), underlain by silty sand with gravel to a depth of twelve and one half feet (12.5'), underlain
by weathered siltstone/sandstone for the remainder of the boring of fifteen feet (15'). Boring Log
No. 4 indicated sandy, lean clay with trace gravel to a depth of four feet (4'), underlain by silty,
clayey sand with trace gravel to a depth of five feet (5'), underlain by silty sand with gravel to a
depth of ten feet (10'), underlain by weathered siltstone/sandstone to a depth of fourteen feet
(14'), underlain by siltstone/sandstone for the remainder of the boring of fifteen feet (15').
This lot is suitable for a spread footing foundation system as recommended by Terracon in the
subdivision geotechnical investigation report noted. The foundation plan for the proposed
residence prepared by Shear Engineering Corporation and dated January, 2003, was used.
Footings were designed for a maximum allowable bearing capacity of 1,500 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 for Pinnacle
Townhomes P.D.P.
4836 S. College, Suite 12 Ft. Collins, CO 80525 (970) 226-5334 Fax (970) 282-0311 www.shearengineering.com
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August 7, 2003
Project No: 1555-02-00
Re: Lots 28 - 31, Pinnacle Townhomes P.D.P.; Fort Collins, Colorado
815 Apex Drive
Shear Engineering Corporation was present on Monday, July 21, 2003 to conduct footing
construction observations. Shear Engineering Corporation was present on Thursday,
July 24, 2003 for foundation wall steel placement observations. All observations were made to
confirm that footing construction and foundation wall steel placement was completed in
substantial compliance with the direction, details and specifications noted on the foundation plan
and in substantial compliance with the recommendations of the geotechnical investigation report.
All footing construction and foundation wall steel placement was completed in substantial
compliance with the direction, details and specifications noted on the foundation plan and with
the recommendations of the geotechnical investigation report.
Shear Engineering Corporation was present on Wednesday, August 6, 2003 to conduct interior
drain installation and foundation wall dampproofing observations. Interior drains were requested
as an alternative to the exterior perimeter drains noted on the foundation plan details. Shear
Engineering Corporation evaluated and approved the use of a four inch (4") diameter interior
drains. Interior drain installation was completed in substantial compliance with the direction of
Shear Engineering Corporation.
Dampproofing observations were made to confirm that dampproofing material and application
was completed in substantial compliance with ASTM D-449 Type II and ASTM D-41
specifications and the federal specification SS-A-701.
Dampproofing coating material and application (DISSCO 521) meets the ASTM D-449 Type II
and ASTM D-41 specifications and the federal specification SS-A-701.
If you have any questions concerning our observations, pl
Sincerely,
Richard D. Wagstaff
Shear Engineering Corporation
BWS / rdw
call (970) 226-5334.
Shear Engineering
cc: City of Fort Collins Building Department