HomeMy WebLinkAboutLINDIMER SUBDIVISION FINAL - 26 93A - SUBMITTAL DOCUMENTS - ROUND 1 - GEOTECHNICAL (SOILS) REPORT6-52
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June 7, 1993
Commission No.: 1163-16-01-OIA
Page 2
reliability factor for the roadway will change from 80% to 70%.
Based on these changes, the Design Structural Number (SN) will be
2.5. The revised pavement recommendations are as follows:
Option 1 Option 2
HBP 3" 2"
ABC 4" 0
SSB
8" 0
PMBB -- 5"
TOTAL 15" 7"
HBP = Hot Bituminous Pavement, ABC = Aggregate Base Course,
SSB = Select Subbase, PMBB = Plant Mix Bituminous Base
We hope we have addressed the above items to the City of Fort
Collins' satisfaction. If you have any questions, please feel free
to call.
Respectfully,
Thomas W. Finley, .;,;;; ..... .
Engineering Geolocast ,
Revie ed by:
23841
Kevin W. Pattersf •.�: E.;;.
FOUNDATION & SOILS`' INC.
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FOUNDATION 11 Engineering,
AND SOILS Inc.
June 7, 1993
Commission No.: 1163-16-01-01A
Bret Larimer, Ltd.
713 Dennison Avenue
Fort Collins, Colorado 80526
RE: Addendum to the soils report for a proposed subdivision, Fort
Collins, Colorado (Commission No.: 1163-16-01-01, dated April
30, 1993)
Dear Mr. Larimer:
This addendum to the soils report referenced above was in response
to comments made by the City of Fort Collins. These four (4) items
are to be addressed by us:
1. Date the test holes were drilled.
2. Effect of irrigation ditch to the groundwater levels.
3. Requirement for a system subdrain.
4. Verification of the Design Traffic Numbers.
Item 1
The test holes were drilled on April 26, 1993.
Item 2
Water was not running in the Pleasant Valley and Lake Canal during
this investigation. Groundwater levels during this investigation
were greater than sixteen (16) feet. Some of the water in the
irrigation canal will eventually percolate downward and may reach
the deeper groundwater levels. However, we anticipated that the
ditch water would raise the groundwater levels no more than two (2)
to four (4) feet.
Item 3
Based on the conditions mentioned in Item 2, we feel that a system
subdrain is not required.
Item 4
This pavement design was based on Design Criteria and Standards for .
Streets - City of Fort Collins. The DTN of 15 was estimated by the
City of Fort Collins at the time of this investigation. Further
calculations by the City of Fort Collins indicates a DTN of 8 (18k
ESAL = 58,400) for the extension of Birmingham Drive. The
100 East 3rd Street • Loveland, Colorado 80537 • (303) 663-0138