HomeMy WebLinkAboutHOMESTEAD PUD SECOND - Filed SEPD-SURFACE EXPLORATION/PAVEMENT DESIGN REPORT -EEC
May 6, 2004
Splittgerber Professional Builders
P.O. Box 271307
Fort Collins, Colorado 80527-1307 Ay:Date: 4-- "0(1
Attn: Mr. Rick Splittgerber
Re: Pavement Design
Homestead Heights
Fort Collins, Colorado
EEC Project No. 1034086P
Mr. Splittgerber:
Our subsurface exploration report for Hearthside Drive, Old Legacy Drive, Old Dominion
Court and Fireside Court in the Homestead Heights development in Fort Collins, Colorado
was submitted to your attention on April 23, 2004. Based on that report, the City of Fort
Collins Engineering Department has provided estimated traffic loading for the identified
streets. The City of Fort Collins has also provided traffic information for Ziegler Road and
Kechter Road. The design summary is included with this report.
We understand relatively small cuts and fills will be required to develop the subgrades for
the widening areas of both Ziegler and Kechter Roads. We expect subsurface conditions in
the widening areas to be similar to those encountered on the development site. After the
finish subgrades are developed in the widening areas,proofrolling of the subgrades will be
required. Any areas of observed instability will need to mended prior to placement of the
overlying pavement section.
Pavement section recommendations are provided in this report based on traffic loading
information provided by the City of Fort Collins Engineering Department and remolded
subgrade strength characteristics. An R-value less than 5 was estimated for the rough graded
pavement subgrades. Using the American Association of State Highway and Transportation
Officials (AASHTO) correlation, that R-value corresponds to a resilient modulus value of
3775. The resilient modulus value of 3775 was used in the pavement evaluation.
CENTRE FOR ADVANCED TECHNOLOGY
2301 RESEARCH BOULEVARD, SUITE 104
FORT COLLINS, COLORADO 80526
970) 224-1522 (FAx) 224-4564
Earth Engineering Consultants,Inc.
EEC Project No. 1034086P
May 6,2004
Page 2
The AASHTO design guidelines for pavement design were used to evaluate a recommended
pavement sections for this project. Recommended pavement sections based on that
evaluation are provided on the attached summary. Other sections could be considered;
however, City of Fort Collins standards require the use of a composite section.
The asphaltic concrete used as the surface course in the pavement area should be consistent
with City of Fort Collins classification for Grading S or SX for the local drives; Grading S
should be used for collector roadways. Grading SG asphaltic concrete will be required for
the bottom lift in asphalt sections greater than 4 inches. The aggregate base should be
consistent with Colorado Department of Transportation requirements for Class 5 or Class 6
base.
We appreciate the opportunity to be of service to you on this project. If you have any
questions concerning this report, or if we can be of further service to you in any other way,
please do not hesitate to contact us.
Very truly yours,
Earth Engineering Consultants, Inc.
Reviewer • •
PpO k1-GiS • t eQ RECii, .,
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844)1S/ONALE 1. A
Wolf von Carlowitz, P.E. Lester L. Litton, P.E.
Senior Project Engineer Principal Engineer
cc: Rick Richter- City of Fort Collins (4)
Bill Nichol—Gerrard Excavating
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