gravel roads - sargent county township meeting

Gravel Roads Sargent County Township Meeting

December 2, 2015Dale Heglund, PE/PLS, NDLTAP Director

North Dakota Local Technical Assistance Program

Checklist

2% is ¼’’ per foot 4% is ½’’ per foot

2% for future pave 4% for unpaved

High shoulders – Do not allow“berms”“curbs

” The engineering term is “secondary ditch”

pg. 9

Substandard Gravel

Standard Specification

Modified Specification

Compacted and Uncompacted

Sections

Compacted and Uncompacted

Sections

Buffer Sections

Brooking Section – Loose Aggregate

020406080

100120140160180200

Tons per mile(October 2013)

186 tons

16 tons

Pretend Blading

1 vehicle 1 year1 ton dust per mile

Each mile with 100 cars per day= 100 tons of fines per year!

Paradigm Shift

pg. 20

Subject ExpertJon Mill, PE/PLS

Presentation Author: Dale C. Heglund, PE/PLS, NDLTAP Director – November 2015

North Dakota Truck Weight Calculator

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Gravel Roads Sargent County Township Meeting

December 2, 2015Dale Heglund, PE/PLS, NDLTAP Director

North Dakota Local Technical Assistance Program