My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
03-20-23-WS
ArdenHills
>
Administration
>
City Council
>
City Council Packets
>
2020-2029
>
2023
>
03-20-23-WS
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
4/7/2023 8:39:38 AM
Creation date
4/7/2023 8:35:09 AM
Metadata
Fields
Template:
General
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
358
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
HR Green, Inc. <br />Project B2204225 <br />October 3, 2022 <br />Page 10 <br /> <br /> <br /> <br />In areas of widening, to the extent possible, we recommend matching the existing soil in the upper 5 feet <br />of roadway with soils of a similar classification, moisture content, and performance characteristics. Do <br />not place non-granular backfill adjacent to in-place granular soils. <br /> <br />We recommend spreading engineered fill in loose lifts approximately 12 inches thick. We recommend <br />compacting engineered fill in accordance with the MnDOT specifications listed in Table 3 above. The <br />project documents should specify relative compaction of engineered fill, based on the structure located <br />above the engineered fill, and vertical proximity to that structure. <br /> <br />The project documents should not allow the contractor to use frozen material as engineered fill or to <br />place engineered fill on frozen material. Frost should not penetrate under pavements during <br />construction. <br /> <br />We recommend performing density tests in engineered fill to evaluate if the contractors are effectively <br />compacting the soil and meeting project requirements. <br /> <br />C.3. Pavements <br /> <br />C.3.a. Design Sections <br />Our scope of services for this project did not include laboratory tests on subgrade soils to determine an <br />R-value for pavement design. Based on our experience with similar clayey soils anticipated at the <br />pavement subgrade elevation, we recommend pavement design assume an R-value of 12. Note the <br />contractor may need to perform limited removal of unsuitable or less suitable soils to achieve this value. <br />Table 3 provides recommended pavement sections, based on the anticipated subgrade soils. <br /> <br />Table 3. Recommended Bituminous Pavement Section <br />Material <br />Thickness <br />(inches) Designation Specification <br />Bituminous Wear 3 (2 lifts) SPWEA240C 2360 <br />Aggregate base 6 Class 5 or 6 3138 <br /> <br /> <br />C.3.b. Performance and Maintenance <br />We based the above pavement designs on a 20-year performance life for bituminous. This is the amount <br />of time before we anticipate the pavement will require reconstruction. This performance life assumes <br />43
The URL can be used to link to this page
Your browser does not support the video tag.